Adult spotted lanternflies are reaching peak activity in Connecticut, raising concerns about the invasive pest and its potential impact on agriculture. Sen. Richard Blumenthal is calling on Congress to pass the Spotted Lanternfly Research and Development Act, which would support more research into ways to control the pest. Dr. Lauren Kurtz, from the UConn Home Garden Education Office, discusses the potential impacts of this pest. (Summer 2026)
In the Media
How to Keep Container Plants From Drying Out So Fast and Cut Back on Daily Watering, According to Pros
Posted on by Zidack, Heather
The Spruce – Heather Zidack discusses why container mixes dry out so fast and how to maintain healthy container gardens.
Managing Invasive Plants
Posted on by Zidack, Heather
Episode 166: Managing Invasive Plants
UConn 360– Lauren Kurtz discusses invasive plant management and the new Invasive Species Certificate Program.
Discussing Gardening Resources on CRIS Radio
Posted on by Zidack, Heather
CRIS Radio: Focal Point 6/1/2026
Heather Zidack from the UConn Home & Garden Education Center talks to host, Stephen Thal, about the cool spring we've had and the number of gardening resources out there for people to explore!
Transcript
00:00:00 Stephen Thal
Hi, welcome to another segment on Focal Point. This is Steven Thal and we've been hosting many programs lately and we're hoping that you're enjoying them.
Some of them have been updates on other programs like today is going to be the gardening program of course.
00:00:19 Stephen Thal
Every year it's different because a lot is based on the weather and some of the new fertilizers they've developed and some of the new resources.
00:00:29 Stephen Thal
For example, you may not be aware of some apps that are available that may help you with your gardening.
00:00:36 Stephen Thal
So without further introductions, we're going to ask Heather Zidack from the UConn Plant and Science Center in Storrs, Connecticut to help us put all these facts together.
00:00:48 Stephen Thal
And we'd like to thank her for coming on because they're in the process of moving. So that's adding a little more stress, but she always enjoys our programs.
Heather, what's up?
00:01:02 Heather Zidack
Hey, Steven. Thanks for having me today.
00:01:04 Heather Zidack
Like you said, we're in the middle of that move, but it's pretty exciting.
So my office, the UConn Home Garden Education Office in the Plant Science Department has moved to a new place on the Storrs campus. We are directly across from the Dairy Bar. If you're familiar with the UConn Dairy Bar and you ever get to make a trip out here, we are right across the parking lot from them.
00:01:29 Heather Zidack
And it's my office, which offers the home gardening advice as well as our soil lab and our plant diagnostic lab.
00:01:36 Heather Zidack
So it's really cool to have all of us in the same hallway so that we can work a little bit better to get more plant and gardening information out to the public.
So it's an exciting time, but I'm happy to be here today to go through some of these plant resources with you as well.
00:01:53 Stephen Thal
Okay, so how do you want to start? Is the weather the culprit in all of this or?
00:01:59 Heather Zidack
Yeah, it's been a very cold, very cool spring. And so we're seeing a lot of stuff is kind of slow to wake up this year. There are plants that are not leafing out as well as we're used to.
00:02:17 Heather Zidack
We've been getting pictures from clients asking us, Is it still alive? What do I do with it? And our biggest thing right now is telling everybody to just wait a couple more weeks.
00:02:26 Heather Zidack
We're hoping that the weather is going to warm up a little bit, become a little more consistent so that we can start really getting out there into the garden and so there are plants that are going to start looking like we're used to.
00:02:39 Heather Zidack
Different parts of the state are also experiencing very different things.
So I had a client talk to me about this the other day where their trees are fully leafed out and everything looks great. But as they were driving through the state, they noticed some places where it looks like it's not as fully flushed out yet.
00:02:55 Heather Zidack
So a lot of it has to do with the cool. But we also had a drought last fall or at least dry conditions that also contributed to some of it.
00:03:03 Heather Zidack
So our biggest thing is just telling people to wait right now and watch things grow. We're hoping that things will be lush and green really soon.
00:03:13 Stephen Thal
Okay. So I should mention, perhaps might be early, but people should be aware that there may be resources in their own area that could help them with getting ready for their spring and summer gardening experiences.
00:03:32 Heather Zidack
Yeah, absolutely.
00:03:34 Heather Zidack
So a couple resources that are available through UConn. There is our office here, as I mentioned, the Home Garden Education Office, and we answer questions via e-mail, telephone, and walk-in visits. If you have plants that are looking, you know, a little unhealthy or you have some garden insects that's eating your tomatoes, for example, and need help identifying it, we can certainly help with that through those three venues.
00:04:03 Heather Zidack
There's also regional extension offices, and every county in the state has one. They are staffed by the Master Gardener Program, which is a volunteer-based program.
Our Master Gardeners do one semester course, 60 hours of volunteer time, and they are very knowledgeable. So they're throughout the state. The Master Gardener coordinators are available to help with some of these things as well.
00:04:30 Heather Zidack
If you do have concerns with plant diseases, we have the plant diagnostic lab here in Storrs where samples can be sent in at any time. And our lab with their brand new facility, they're very excited to be looking at setting up some new tests this year as well to expand their services.
00:04:48 Heather Zidack
And finally, the soil lab is also here in Storrs. We're all in the same building now. So they help with like soil nutrition and stuff like that.
00:04:55 Heather Zidack
So there's a lot of local places that you can get really good information.
The extension program is pretty wide across Connecticut, and we're here to help gardeners make the right decisions and identify any issues that are coming up in their garden.
00:05:10 Stephen Thal
Now, if they have certain bugs or something, shouldn't they save little containers so they can catch these little varmints and send them off to you?
00:05:20 Heather Zidack
We recommend, yes. If there are any pests in the garden, we can take a look at them.
We recommend that you put them into a little container and put some rubbing alcohol into the container to kill the insect before we take a look at it. But we definitely can.
00:05:35 Heather Zidack
Our specialty is in the garden specifically. So if it's in the home or insects that are affecting your pets or things like that, we don't have that expertise, but we can help with anything that is in the garden, yes.
00:05:51 Stephen Thal
Okay, so we're ready to go. So what do we need to prepare for a good garden this year?
00:05:57 Heather Zidack
So one of the things I wanted to talk about is how everyone gets their information when they're getting ready to start the garden.
There's a lot of information out there right now, and we have access to so many different resources that it's really important as gardeners to kind of be a little bit, you know, scrutinize your information a little bit, make sure that it's the right source, make sure it's accurate, and things like that.
00:06:24 Heather Zidack
There's a couple of different things that are becoming more and more popular as sources for gardening information that I wanted to talk with you about today. We can go through them and talk about things that you should look out for, things that they're good for.
00:06:43 Heather Zidack
The first one I want to bring up - It's been around for a long time, but finding your garden information on the Internet is really, really a good source.
There's a lot of good information out there, but it's really important to be cautious of what you're reading. So if you're especially on social media, you can see a lot of misinformation. You can see a lot of trends and opinions on places like that.
00:07:10 Heather Zidack
If you're looking for really accurate gardening information, you want to look at extension websites for extension programs like UConn Extension or any .edu or .gov site. Every state has their own extension program. So those are really good resources that we partner with for research and things like that so that the information is shared and verified across these different programs.
00:07:38 Heather Zidack
You want to learn the credentials of who's presenting the information to you. Are they like a horticulturalist or are they looking for just clicks to get your engagement on the internet, right? So are you talking to a, you know, a professor or faculty? You know, someone from the USDA, someone from extension, things like that.
These people are professionals who are educated in the field, whereas sometimes there's information coming from people who don't necessarily have the background or the research to back up the claims.
00:08:11 Heather Zidack
So really important to check your sources, look for those EDUs, those .govs, those extension pages, look at who's giving you the information and then go ahead and verify, find another source on the internet that has that information.
So maybe you can find it from more than one source and it is accurate, but just be a little bit cautious with what you're looking at to make sure that it's what you are actually looking for and giving you the right information for your area.
00:08:40 Stephen Thal
Okay, so now what happens if you don't have a computer? Where can you get the information?
00:08:46 Heather Zidack
So a lot of times people can go to libraries to get a lot of that information as well. There are some really good books out there.
It's a really good thing to bring up that we don't want to forget that gardening books still have a lot of good information. A lot of the times, although we are doing a lot of research and learning a lot of new things, some of the tried and true methods are still going to be the same.
00:09:11 Heather Zidack
There's still a lot of factual information in some older texts that we still do today. For example, we still prune trees the same way that we have for many, many years. We still plant our seeds in the same way that we have for many, many years. So going to some of those texts can be a really helpful option as well.
00:09:33 Heather Zidack
And libraries will offer you that access to the Internet, access to those those texts.
00:09:39 Heather Zidack
The other thing, you can always call us if you have any questions. There's plenty of resources out there for people to get the right information they need.
00:09:48 Stephen Thal
Okay. What is your phone number?
00:09:50 Heather Zidack
Our phone number is going to be 860-486-6271. Again, that's 860-486-6271 for the UConn Home Garden Education Office.
00:10:06 Stephen Thal
Okay, is there anything that's an accessible format that can help people do this? Are they still in the process of putting it together?
00:10:17 Heather Zidack
They're still in the process of putting a lot of it together. A lot of UConn's materials, especially in our website, have been updated to be ADA compliant with screen readers and materials like that. So most UConn web pages will have that accessibility available to them.
Also calling or you can come in anytime we can, you know, print off material for you as well.
00:10:43 Stephen Thal
Okay, great. Okay, so now where do we go?
00:10:47 Heather Zidack
So a couple more resources that we have.
One of the things that I did want to mention is the idea of AI, because this is becoming a huge thing. You're hearing about it everywhere. And there is a lot of AI-generated gardening info out there.
00:11:03 Heather Zidack
What AI will do to find that information very similar to an advanced Google search, right They will look through whatever information is available.
So they'll look at commercial stuff, they'll look at personal stuff, they'll look at scientific data, they'll ball it all together and give you an answer. So sometimes it doesn't know what you're exactly looking for.
It's a good starting point, but you need a little bit more to guide it.
00:11:27 Heather Zidack
So if you are going to use AI, even like AI Gemini, Google searches, things like that. Always tell it what information you're looking for and where you're trying to find it from.
So for an example, I'm looking for how to take care of my lilies from extension sources only. That way it tells it to look through extension EDUs to get all of the information.
Tell it I'm looking for information on native plants from my local extension. It'll tell you native plants in the area.
00:12:05 Heather Zidack
So if you can guide AI in the right direction, it can be a really useful tool. But again, you need to verify that information just like you were looking on the internet.
00:12:15 Heather Zidack
Something else that has kind of come up is the idea of AI generated plants.
We've seen this happen a few times in our daily questions and answers with the public, but sometimes there's pictures out there now of these AI-generated plants that look beautiful and they don't exist. It can lead to heartbreak when you're trying to shop.
00:12:39 Heather Zidack
Any signs that it could be artificial would include if there's any missing or extra plant parts, if the flowers are kind of mismatched, if the colors are super brilliant or there's not a lot of uniformity.
00:12:51 Heather Zidack
In general, if it's too good to be true, it might be, so you want to take a look to see if you can find more information about it somewhere else. It's really important when you're shopping for your plants.
00:13:03 Heather Zidack
There is a Connecticut native and sustainable landscaping guide that exists that you can look up online. And that guide tells you a lot of native plants in Connecticut that are going to be helpful for you to plant.
00:13:20 Heather Zidack
There are resources at your local garden centers that can help you find native plants or even exotic ornamental plants, but what fits your garden and your space best. So keep that in mind when using AI.
00:13:37 Heather Zidack
The other thing that I wanted to mention, and we talked about this a little bit before I jumped on, was plant apps. Now you've had a little experience with those, right?
00:13:48 Heather Zidack
Those can be really good for starting points, especially with plant ID. They're starting to get a little bit smarter. They are being AI infused or however you want to call it. And using these plants can usually get you right in the right direction.
00:14:06 Heather Zidack
They often, you'll take a picture and it'll give you a list of what the plant could be. And you can narrow it down from there based on your location, based on other identified structures that maybe you can't see in the image.
00:14:19 Heather Zidack
For example, if a stem is like a little bit fuzzy instead of just, you know, sleek and time of year. So those can be really important tangible identifying factors. Other things like smell or overall size, texture, things like that can really help you determine if your app is giving you the right information and help you calibrate it because apps often can miss context clues that pictures might not provide.
00:14:47 Heather Zidack
So, for example, if you take a picture of a plant and there's no size reference on it, the app may determine that it's bigger or smaller than what it really is. There is a plant out there called giant hogweed, which there's a lot of anxiety about. And it can get up to like six to eight feet tall. It flowers later in the fall or later in the summer, sorry.
And a plant app could pick it up. But there are a handful of lookalikes that bloom at different times of year. They bloom at different sizes. And they are just not the same.
And then a photo may not give you that information.
00:15:32 Heather Zidack
So with plant apps, you always want to use them as a starting app or a starting point and work from there.
So it'll give you a list of things that it could be and then you want to verify that it's blooming at the right time of year, it's the right size, it's in the right location to make sure that it is what you're actually being told.
00:15:53 Heather Zidack
They unfortunately are not nearly as developed for plant health diagnostics. So they can There are ones that claim to give you an idea of what's wrong with the plant or what it needs, if it needs nutrition, if it needs water, things like that.
Be really cautious with these. There's just too much nuance at this point.
00:16:13 Heather Zidack
So just like when you get sick, not every symptom can be seen and further assessment is needed, especially with plant health. And there's a lot of lookalikes out there.
00:16:23 Heather Zidack
So leaf spots can be caused from bacteria, fungi, environmental conditions, all sorts of things that you need to narrow down with additional information.
So those are better given to a plant pathologist or a plant diagnostic lab, whereas using the apps for identification is really the best use of them right now, keeping in mind that you do those few things to narrow it down.
00:16:49 Heather Zidack
The other really good thing the apps are kind of making their way towards is there are some that can help you with your landscaping.
So with those, you can take a picture of your landscape and they can insert little plants to make it so that you can see what it could look like. That's another really good use of plant apps just to get that information.
So once you get the information you need, you can start building your garden or managing your garden in a better way.
00:17:24 Stephen Thal
Okay. We're interviewing Heather from the UConn Plant and Science Center, but she's trying to give us a lot of good resource information as well as information for planning.
It's not just throw a few plants in and you're off and running, I think. You have to understand the habitat of your own environment you're working in.
00:17:50 Stephen Thal
And she's describing some of these now in order to help. And of course, as we go on throughout the year, different things will come up depending upon the weather changes and depending upon the soil changes too. Correct.
00:18:09 Heather Zidack
Yes, so that's a huge thing that we're starting to see and we see first thing in the spring is that temperatures are really important and plants are very sensitive to temperatures both in the air and in the soil, like you mentioned.
That can be an indicator of when we start putting plants out into the garden.
00:18:31 Heather Zidack
When plants are, we see like the soil temperature rise, that's slower to rise than the air temperature. So in early spring, when we start seeing soil temperatures around 50 degrees or so is when we start getting excited and doing things in the garden.
That's usually when the forsythias bloom. That's a good indicator.
And at that point we can start planting like our cold crops, our brassicas, our cool season herbs, root vegetables, things like that. They like the soil temperature at like 50, 60 degrees.
So a lot of gardens by now already have those planted and they're doing pretty well.
00:19:10 Heather Zidack
Whereas you have, once we get 50 to 60 degree air temperatures at night, you start being able to bring out more of your warmer season stuff, so your annuals, your hanging baskets, your vegetables that are like peppers and tomatoes, the warm season stuff.
All of that can start going out when we start seeing nighttime air temperatures at between 50 and 60 degrees.
00:19:37 Heather Zidack
The one thing that I tend to caution people about is that once we're at that temperature, it's It's not quite over yet, right? We all know New England spring, there's going to be a random frost somewhere in the equation.
So you have to be able to cover your plants if they're planted. If we're getting a frost, a lot of plants are susceptible to damage when it's too, too cold.
00:20:01 Heather Zidack
So you can cover things with like You know, if you're in a pinch, use a bed sheet or a towel. You can use, you know, just breathable materials.
You never want to use tarps or plastic.
And if you do have the opportunity, you want to use some stakes to kind of tent it up so that there's some airflow and some warm air there keeping the plants safe.
So that's a really good caution.
00:20:27 Heather Zidack
If you're out and you're shopping for garden stuff now, you're looking at perennials and shrubs, most of them should be able to go outside the day you purchase them, especially if you're in a garden center where they're storing all of their plants outside.
Odds are that they've been hardened off and ready for the season to come.
00:20:44 Heather Zidack
If you're buying something that is in a greenhouse, it may not be ready and it may need to be transitioned. Best thing to do is to ask your garden center professional for clarification.
Is this okay to go outside? Has it been growing in a greenhouse all this time?
Those kinds of things will help you determine whether you can put it outside yet or not.
00:21:04 Heather Zidack
Your houseplants definitely may benefit from doing field trips in and outside for a couple of weeks before you get them fully outside.
00:21:13 Heather Zidack
One of the things that's really important is if they got full sun in your house, you don't want to put them out in the direct sunlight right away.
Your window panes tend to filter a lot of light, especially the newer window panes have the UV blocking technology and stuff and they're not getting a full spectrum of light in the same way.
So you want to put your house plants in a place that has bright indirect light first and give them a couple of weeks to transition before you put them right out in the full sun.
Plants can actually get sunburned just like we can. So you want to make sure.
00:21:49 Heather Zidack
The other thing too, you know, looking at your hanging baskets and things like that, they may also benefit from those little field trips in and outside. They're really easy to move if you've got a frost coming. So that's really good to keep in mind.
00:22:06 Heather Zidack
So that's some shopping tips right now of like what can go outside and what can maybe hang back for a little while longer.
00:22:15 Stephen Thal
That's great. A lot of good information.
And of course, plants and gardening, that's a huge field. Even if you're going to be doing smaller things inside.
00:22:28 Stephen Thal
Do they ever do herbs as houseplants or they have to be outside?
00:22:35 Heather Zidack
Herbs are great for indoors as well as outdoors. They don't get too big. They don't necessarily require as much sun as some plants.
00:22:48 Heather Zidack
In general, when we're looking at plants, the more showy their flowers, the more light they tend to need.
Now there's exceptions to every rule, but a lot of plants, especially our herbs, our vegetables, the more that they produce fruit and flower, the more sunlight they need.
00:23:07 Heather Zidack
The great thing with things like herbs like basil and parsley, they do produce flowers, but that's not ever what we're looking for from them.
So by keeping them on a windowsill, they will get enough sunlight to produce the leaves. That's what we're looking for for culinary purposes. And so those can be a really good thing.
00:23:26 Heather Zidack
They can also be great if you're just getting into gardening. They seed really quickly, they don't take up a lot of space, and it's a really good chance to learn on something that's kind of easy.
00:23:39 Stephen Thal
That's good. Any other interesting things we need to look at for this year?
00:23:45 Heather Zidack
Yeah. Well, for this spring, looking ahead, couple of cautions that I have for people is to avoid pruning anything that blooms in the spring just yet.
We do have phone calls occasionally at this time of year where people are asking if they can prune their lilacs, their hydrangeas, their azaleas, rhododendrons, things like that.
And right now we recommend that you wait.
00:24:13 Heather Zidack
If you prune too early on a lot of these plants, you could lose their flowers for the season. They actually do set their buds in the fall. So those flower buds are already there and if you cut them back, you could be removing flowers.
So even those hydrangea sticks look really ugly, give them a little more time. They could have flower buds on them and you wouldn't want to miss them this year.
00:24:38 Heather Zidack
Another thing is that it's a great time to divide and transplant your fall and summer blooming perennials.
Leave your spring blooming stuff because it's in the middle of having its show for the season, but you can move some of those other things still in May.
00:24:57 Heather Zidack
Another tip that I give a lot of people is as you're planting, especially vegetable gardens, if you have issues with insects and pests, put netting as you're planting to help. It takes another thing off the list. You don't have to go back and do it later.
00:25:14 Heather Zidack
If you do your netting, when you do your planting, it'll help keep those pests away for longer. but depending on what you're planting, you may need to remove those so that pollinators can get in. So always make sure that that's in line and then
00:25:30 Heather Zidack
The biggest reminder is to remember to water because as we've seen with different springs, sometimes we get trained if we have a really rainy spring to not get in the habit of watering.
So even if you don't have to water because there's rain, it's really good to check the soil and make sure that you do or do not need to water.
00:25:51 Heather Zidack
So what you can do to do that is you wanna dig up a little bit, take a little handful of soil, squeeze it in your hand.
If you open your hand and that soil holds shape, then it's probably good on water for a little while longer.
If you open your hand and it turns to dust or falls apart, is really crumbly, that may need water to supplement.
And if you squeeze your hand and you have water running out of your hand, you're definitely overwatered and you need to wait until your next watering.
00:26:20 Heather Zidack
This can be effective for your house plants as well as your plants in the ground because you can kind of get a gauge of what the soil feels like to help you decide if you need water.
00:26:31 Stephen Thal
Boy, a lot of information coming up, especially when people have big gardens they have to manage. What kind of protective gear should people be wearing as they're gardening? Many people forget that's part of the whole process.
00:26:45 Heather Zidack
Yeah, it's really important to make sure that you're protecting yourself when you're outside.
One of the big things that I recommend is make sure you're wearing long pants and long sleeves, just like a lighter material if you can. By doing that, you're going to keep anything from brushing against your skin that might cause an irritation.
00:27:05 Heather Zidack
So some people are very sensitive to different plants and it may be that they need a little bit more protection.
00:27:13 Heather Zidack
So especially if you're handling a plant that you don't know what it is, long pants, long sleeves, gloves, and closed-toed shoes are a must.
So those big thickets that you're trying to weed out for the season, make sure that you're fully covered and that your skin is covered because you don't know what's in there necessarily.
And if you've ever gotten poison ivy, you know that you don't want to get that if you're in a dense kind of thicket area.
00:27:40 Heather Zidack
Other important thing, it's really important to wear a hat when you're out in the sun.
Sunscreen as well to make sure that you are protected from the UV as well as sunglasses can be really important.
00:27:53 Heather Zidack
We've seen people though will garden in flip flops and shorts and they can do that too.
But if you are working in, like I said, especially in an area of your property where you don't know what's growing there, the more covered you can be, the better.
00:28:09 Stephen Thal
And also to stay hydrated.
00:28:11 Heather Zidack
Yes, super important, especially when we get into those hot days.
When I worked at the garden center, I used to tell people to water the plants and water yourself.
00:28:23 Stephen Thal
Why don't you repeat the numbers one more time? People can call for help. Now, is there a charge for this?
00:28:30 Heather Zidack
No, this is a free service. So emails and phone calls to our office are free.
00:28:37 Heather Zidack
Our plant diagnostic lab and soil lab have their own payment structures and things, which you'd have to contact them for more information.
But you can always call us first and we can point you in the right direction if you have any questions.
00:28:51 Heather Zidack
So it's just one number to write down for now, and that would be 860-486-6271. Again, that's 860-486-6271.
00:29:05 Stephen Thal
Okay, well, we want to wish you success in your move as well as enjoying a new place that makes you give you a breath of fresh air.
00:29:16 Stephen Thal
Thank your entire staff for helping with the move as well as others, and thank you for coming on and sharing a few moments of helping us to prepare and plan for this coming spring year, and we hope to get you back in, I guess, the fall.
00:29:35 Heather Zidack
Sure thing. Thanks for having me.
00:29:37 Stephen Thal
Yep. Take good care.
00:29:38 Stephen Thal
This is Steven Thalwith another segment on Focal Point. Thank you for allowing us into your homes.
00:29:44 Stephen Thal
We want to thank Heather and her staff for all they do to get this information together and collect it so that we all can benefit from many aspects of their situation.
00:29:57 Stephen Thal
Now, phone numbers have been given and we hope you're able to follow up and learn like all of us do.
00:30:05 Stephen Thal
In closing, we want to remind everybody to please wear a hat and sunglasses to protect yourself.
As Heather said, in the garden and everything, you got to wear long pants and long sleeve shirts and do the work mostly in the morning, right? It's the coolest.
00:30:23 Stephen Thal
We like to also remind you about emergency planning, especially in your home. or when you're volunteer working, learn about what the emergency plans are and get everybody involved in your family and also practice them. That's the key thing.
If you need additional resources, contact your local fire and/or police department and they can guide you as to where you can get the best help.
00:30:52 Stephen Thal
Again, have a safe summer and be safe, especially against the sun and other things in the garden that may be of hazard.
Thank you all for listening and have a great great summer.
Do Eggshells Actually Help Your Roses Grow? Here’s What a Gardener Says
Posted on by Zidack, Heather
Do Eggshells Actually Help Your Roses Grow? Here’s What a Gardener Says
The Spruce – Heather Zidack discusses how Egg Shells are best used in the garden, and things to consider before adding them!
These are damaging plants to avoid in CT gardens. They can kill native plant species and take over.
Posted on by Zidack, Heather
These are damaging plants to avoid in CT gardens. They can kill native plant species and take over.
The Hartford Courant – Dr. Lauren Kurtz discusses how native plants attract birds and pollinators, while invasive species harm ecosystems and what residents can do in their own gardens.
Wait, Why the Heck Are People Putting Pennies in Their Houseplants’ Soil?
Posted on by Zidack, Heather
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Posted on by Zidack, Heather
The Spruce – Heather Zidack and other professionals give their insight on using a humidifier to help keep your Christmas tree fresh.
We Asked Gardening Pros If You Should Rake Leaves From Garden Beds—And They All Agreed
Posted on by Zidack, Heather
We Asked Gardening Pros If You Should Rake Leaves From Garden Beds—And They All Agreed
The Spruce – Heather Zidack and other professionals give their insight on raking leaves from your garden beds.
Fall Gardening and Preparing for Winter on CRIS Radio
Posted on by Zidack, Heather
CRIS Radio: Focal Point 10/13/2025
Heather Zidack from the UConn Home & Garden Education Center talks to host, Stephen Thal, about the summer weather patterns, and how they have impacted our fall garden chores!
Transcript
00:00:01 Stephen Thal
Hi, welcome to another segment on Focal Point. This is Stephen Thal, your host. And boy, we got another exciting program for our listeners. Today we're going to be talking about plants and gardens and how to take care of them, especially with the challenging weather- humid, hot. Oh, the plants must be having a tough time and garden things. What's happening?
00:00:27 Stephen Thal
Well, here to help us work this all out is Heather Zidack, and she's from the UConn Plant and Garden Education Center. Welcome, Heather.
00:00:40 Heather Zidack
Hi, Stephen. Thanks for having me.
00:00:42 Stephen Thal
Oh, it's always a pleasure. So what did the weather do to the plants this year?
00:00:49 Heather Zidack
So, this year was a wild year for our plants. It was a wild year for us too. Some of the weather that we noticed was quite crazy. But in particular, we had a very hot, very humid summer that led us to see a lot of fungal diseases. We got a lot of phone calls, a lot of emails, a lot of samples into our diagnostic lab that had a lot of diseases in the garden. So that was something that we saw. We actually have also been getting reports right now. People are asking us why are their lilacs blooming? And it's because of the stress that we've had this season.
00:01:28 Heather Zidack
So with that heat, that humidity, we've also had some really dry stretches that have kept us kind of right on the border of a drought. We're not quite there yet, but we are in abnormally dry conditions. So when plants are stressed, sometimes they do some really strange things and so people have been seeing their lilacs blooming in the fall when that's normally a spring blooming plant. It's not something that's normal, but it's definitely it's an environmental thing and it's not going to be like detrimental to the lilacs if you are seeing that. So it's it's worth noting, but it's not necessarily need for alarm.
00:02:06 Heather Zidack
We had earlier in the summer, we had the wildfires and smoke from that may have affected some of your plants. Because believe it or not, the air quality can affect your plants in the garden. And so that could have led to some ozone damage, which we see is like curling in the leaves. It can look like distortion in the leaves. So some weird things with that.
00:02:29 Heather Zidack
And then the other thing is that we saw temperatures whenever we went over 85 degrees, usually our common vegetables like tomatoes, peppers, things like that will actually kind of put a pause on. And so, they will not ripen or they may not fruit as heavily. So, we got some calls in saying, “Hey, why have my tomatoes been green for so long?” And it was probably because of the weather.
00:02:56 Heather Zidack
So a lot of things happening, the swings in moisture, so we'd have some really warm days, some really dry weather, and then we'd get kind of a deluge of rain. That kind of also stressed the plants out as well.
00:03:12 Heather Zidack
So we are advising right now to water your plants, especially your evergreens going into the fall. If we're not seeing an inch of rain forecasted, you want to make sure you're out there watering during any of your new plantings, any of your evergreens, anything like that.
00:03:31 Heather Zidack
The drought that we had last fall, so fall of 2024, actually caused a lot of losses in the garden for evergreens, rhododendrons, things like that in 2025 when we were coming into the spring and plants were starting to wake up. So, watering now is going to save you a headache in the spring for sure and if you've had anything like if you have had experience with like fungal disease in your garden this year we're recommending cut all of that tissue back let those leaves drop rake them up and dispose of them don't come compost it because you don't want to put it back into your garden so a lot of different weather patterns have caused the gardeners to have a little extra work this fall I think.
00:04:14 Stephen Thal
Okay so where do we go from here with the weather are we going to be bringing some plants into the house? And and we'll also be checking on the plants that have been in the house that may need some help for the fall.
00:04:32 Heather Zidack
Yeah, so it's definitely that time of year we recommend bringing in your plants when nighttime temperatures are 50 degrees or lower. And so, we've kind of been doing okay with that weather-wise but we are starting to get into that time where it's consistent and we're seeing that below 50 degrees.
So, a lot of things if you keep, you know, palms outside or if you keep any citrus trees or anything outside, they need to be in if they're not already. So, some species can be a little more sensitive, so they may have needed to come in already, like even before that 50 degree mark, but that's our rule of thumb.
00:05:13 Heather Zidack
When you start to bring them inside, definitely look them over really well, feel them over really well, make sure that the leaves are smooth, everything is healthy, you're not feeling any kind of like insects or any sticky leaves or anything like that. If you are, it is time to kind of have a little bit of a closer look, have checked out for bugs, make sure that you're not bringing anything into your house that you don't want staying there for the winter with your plants. You know, check the undersides of the leaves, check through the soil a little bit, and identify and treat any of those issues before they come into the house.
00:05:51 Heather Zidack
So, we do help homeowners if you have pictures, you can send us pictures and we can take a look to see if any of those plant related insects are anything that you need to do anything about before it comes inside.
00:06:07 Heather Zidack
You want to give your plants a chance to transition from inside to outside. So if 50 degree nights is what they're-the goal is and we've been letting the weather come down to that 50 degrees and then you're bringing it into your 68 degree house, that's an 18 degree temperature difference. So they may show signs of stress.
00:06:29 Heather Zidack
They may kind of not be used to the amount of moisture in the air in your home as compared to what was outside, especially as it starts to get a little colder and we start kicking on the furnace and the air is drier inside the home.
00:06:43 Heather Zidack
So keep an eye on your plants, monitor them. Those stress responses may happen, but don't-go ahead and-don't overreact to it. So if you see them drying out, if you see them wilting a little bit, don't change your practices too much. Continue to water as you've always watered. Continue to take all the care that you always have to make sure that they're not drying out, but you're not over watering either.
00:07:12 Heather Zidack
We see a lot of people that will over love their plants and over water them. So you end up kind of seeing things come inside, the wilt, we’ll panic and then we'll put a ton of water on it, which then sends it to swing the other way into that over watering and root rot and things like that.
00:07:30 Heather Zidack
So just keep doing what you're doing, but keep an eye on what's happening to make sure that you can respond if there is an issue.
00:07:39 Stephen Thal
Okay. And that also goes for the local gardeners too. They probably experience a lot of people requesting help during the summer and now how to make best use of their garden.
00:07:54 Heather Zidack
Yeah, yeah. And we're going to start seeing now with, you know, again, weather related, we're going to start seeing frosts. Some parts of the state may have seen them already.
If you have anything like mums or pumpkins outside, those are things that you may want to protect from those frosts.
What happens is that when the dew falls at night and it crystallizes into frost on your plant material, it can actually damage the tissue and that causes your pumpkins to rot faster. It causes a lot of tender flower petals to not look so good.
00:08:31 Heather Zidack
So, what we recommend is to either bring them inside if you just have one mum on the front step, that's easy to bring in and just leave in the kitchen overnight.
00:08:40 Heather Zidack
But if you have a larger grouping of plants or if you have some, you know, some cole crop vegetables or something like that that you may want to protect, you can use something as simple as a bed sheet or a towel even.
Never use a plastic tarp or anything to cover plants because that will just exacerbate the cold against the plant tissue, but definitely do find a way to cover them if frost is coming or bring them inside.
00:09:12 Stephen Thal
What kind of covers can you use?
00:09:14 Heather Zidack
So, anything that is fabric based is going to work really well. They do sell specific like frost covers, but you don't have to go that far.
If you have an old sheet, if you have towels, a pillowcase even, kind of depends on your plant size, but a lot of those just to keep that frost from falling onto and making contact with the plant tissue.
00:09:37 Stephen Thal
Okay so now we got to get in and roll up our sleeves and begin the work to preparing the plants as Heather has been saying earlier because of the weather and now she's trying to talk a little bit more specifically about plants that come in the house to make sure they don't have some sort of a disease, which will impact the plants that are in the house as well.
Now, is this the time too, because of the changing of the sunsets and amount of light coming in, you have to move your plants inside the house to different positions in the house.
00:10:21 Heather Zidack
So not necessarily different positions. Plants that we have indoors go through yearly cycles just like the ones outdoors. And so some of them may be able to tolerate that change in light as they adjust because it happens slowly. Always check your plant label to make sure if it needs like a full sun or indirect sun.
You know, we've talked about before those differences are kind of like if you think about a cat in the living room, right? So, if it needs bright indirect light, maybe the cat is somewhere that the light is not shining through the window but it's right next door versus if it needs bright direct light, the cat is sitting right in the window and if it needs shade, it's over by the couch and you don't see it necessarily.
So, if you always kind of think about in that way, you can remember where your plants need to be in terms of their labeling, which is important to follow.
00:11:14 Heather Zidack
But they do adapt a little bit over time when they're indoors, which is why we need to help them adapt when they go outside.
So if you keep them in a place that is draft free, bright enough for whatever their requirement is, and away from any of the heat sources, so away from any radiators, vents, anything like that that can dry them out, keep them away from like being too close to wood stoves obviously, and that will help them to not be too dry so they don't lose water as quickly. But the other thing too is that like I said, they go through those yearly cycles, so they will go dormant just like the outdoor plants.
00:11:58 Heather Zidack
Cooler temperatures, changes in light, changes in water can trigger dormancy, but it is species dependent and so with our houseplants because we keep them in a steady environment as possible, some years they'll go into dormancy, some years they won't.
And so it's just kind of knowing what plant you have and whether to expect that or not. That can be really helpful. The other quick tip with houseplants that I like to remind everybody is that we allow the soil to dry in between waterings.
00:12:32 Heather Zidack
So don't keep your soil wet when your plants are indoors. Let it dry out as much as you can in between to help prevent fungus gnats. Those are those little black flies that seem to get everywhere.
Again, follow what your plant needs for watering, but if you can stretch it and let it dry out a little bit, you're going to help reduce that issue.
00:12:54 Stephen Thal
Oh, that's great. Is this also a time to take a look at repotting any of the soils or any of the plants that we're bringing in or the house plants that have already been there.
00:13:07 Heather Zidack
You certainly can.
00:13:09 Heather Zidack
People like to repot either in the fall or in the spring. Usually when you repot in the fall, it can be good if you've had them outside and you're worried about any critters that may come in with them in the soil. It's a good time to do it.
You can do it in the spring if they've put on a lot of growth over the winter while they've been indoors.
So it all matters on checking the plant in the pot to see if there's any presence of any kind of insect or anything.
00:13:40 Heather Zidack
You're definitely going to want to change out your soil. But also if the plant is, those roots are a little too tight in the pot, it starts to get root-bound, that's more your sign of whether to do it or not. It doesn't have to be on a time frame per se.
00:13:56 Stephen Thal
Okay, this is Stephen Thal with another segment on Focal Point, and we're interviewing Heather Zidack from the University of Connecticut Plant and Garden Center up in Storrs, Connecticut.
00:14:08 Stephen Thal
And she'll give us some phone numbers that we can call regarding if you need some help with your plants or the garden that you've been doing.
Heather, you got some phone numbers we can use?
00:14:24 Heather Zidack
Absolutely.
So, if you have questions about anything in the garden, anything plant related, your house plants, anything that you have that you you keep for plant material, we can help at the Home Garden Education Center.
That number is 877-486-6271. Again, that's 877-486-6271 or you can always e-mail us at ladybug@uconn.edu. Again, that's ladybug@uconn.edu.
00:15:03 Heather Zidack
We look at pictures to help with diagnosis, so sometimes a picture says a thousand words. Also, I can give you the phone number too. It's a great time of year to be doing soil testing.
So, the Soil Nutrient Analysis Lab, their number is 860-486-4274. Again, that's 860-486-4274.
00:15:26 Heather Zidack
So, between the services in the Home Garden Education Center, we work with our plant diagnostic lab and then the soil lab. We have pretty much everything that the home gardener or plant enthusiast needs to make sure that they're keeping their plants healthy.
00:15:45 Stephen Thal
That's good.
00:15:45 Stephen Thal
What about fertilizers?
When does that come into play?
00:15:50 Heather Zidack
Yeah, that's a good question. So at this point, we should not be fertilizing anything. There are some exceptions for like lawn care and things like that, but my colleague is much more versed in that.
00:16:05 Heather Zidack
In general, it is too cold to fertilize anything right now because what's going to happen is if you were to put down any plant food,you would be pushing growth and any growth that's new on plants is very tender and very small and very susceptible to damage.
So, it'll push out new growth and then it would freeze and cause damage and not do so well for your plant. So, we don't recommend fertilizing at this point in the year.
The next time that you would be able to or you should would be for the springtime, once the soil temperatures start to climb up again and it starts to warm up.
00:16:46 Heather Zidack
If you have houseplants, you can fertilize.
00:16:50 Heather Zidack
However, some of them only need it once a year. It really depends on the species of houseplant you have.
And so again, like I talked about over loving our plants with watering, sometimes we can over love our plants with fertilizer and, you know, overfeed them. And so sometimes we don't want to do that. So it's something to be aware of.
Usually, as long as the plant is in active growth, you're able to fertilize. And so since we're kind of in that time of year where things are winding down and going to bed for the season, we just don't do it. But it all depends on what you're growing and what you have to keep an eye on.
00:17:30 Stephen Thal
Okay, what are some of the other things that we need to take care of in the fall?
We did mention, we talked a little bit about fertilizer.
We talked about bringing plants into the house. Making sure they're not bringing some critters in.
00:17:43 Stephen Thal
What about the compost pile? Is that something that we do all year round or just certain times of the year?
00:17:50 Heather Zidack
Yeah, composting is year round. So you want to make sure that you're continuously turning your compost pile. There's a couple different kinds.
So there's hot composting where you keep your compost pile at 140 degrees by turning it throughout the year.
There's also cold composting, which is what I'm a little better at, where you kind of throw it together, turn it when you can, but it takes longer and it may not necessarily take out all of the pathogens and weed seeds in the same way that hot composting will. So you have to be really careful with your compost at that point.
00:18:25 Heather Zidack
Which is a good thing to keep in mind because right now, we advise people who are doing their garden cleanup for the season.
There's a lot of controversy between that going for do I clean up in the fall or do I clean up in the spring? And so, what I tell people with that is to maintain what I call goal-oriented gardening. So, if your garden is all about pollinators and wildlife support and native plants and all of that. Definitely clean up in the spring. Don't cut back your perennials right now. You can leave your leaves a little bit. That leaves habitat options like hollow stems, leaf litter, and all of that for overwintering insects. And it leaves seed heads for birds to feed on as well as for winter interest.
00:19:16 Heather Zidack
However, if you have had a lot of disease this year and we talked about like with all the weather conditions, we saw fungal disease, people had, you know, if you had insects in your garden this year or things like that that you needed to manage, then one of the best things that you can do is clean up your garden in the fall.
00:19:37 Heather Zidack
And it goes against that instinct to leave the leaves and leave that pollinator habitat, however, it does help us to reduce our need for chemicals and other products in the spring and the following season because you're taking out anything that's potentially infected and just disposing of it right now instead of letting it overwinter and come back in the next season. So, if you've had disease in the garden and your goal is to have to try to not have that happen again next year.
You want to clean up all your leaf litter, you want to pull up all your sick plants, dispose of everything in the garbage, don't compost it. You know that you are removing some of those habitat opportunities for the pollinators, but you're keeping your plants healthy for them to come back to and find next season. So it's kind of a toss up between the two.
00:20:31 Heather Zidack
And so I always encourage gardeners to really look at their own personal goals in their garden and see what they're willing to work with. If they really want that pollinator habitat to clean up in the spring, go for it. If they want to manage the disease, then fall may be the better time. And the other thing to keep in mind that I encourage people is to think about their own time.
00:20:56 Heather Zidack
So your time is valuable when it comes to garden cleanup. And make sure you're doing what you have time for when you have the time. So I've explained this and I've talked to other gardeners about this and I am a big football fan and so on Sundays, I am watching football instead of being out in my garden, believe it or not.
And so sometimes for me, cleaning in the spring allows me to have that extra hobby and so it's kind of looking at my time and my priorities and really making sure that my garden is fitting that.
00:21:31 Heather Zidack
Because at the end of the day, we all do gardening as something we enjoy, and we want to make sure that we continue to get out there to enjoy it.
00:21:40 Stephen Thal
Okay, are there any other major things that we need to cover at this point, Heather?
00:21:46 Heather Zidack
One of the things that I definitely encourage people, like right now, if you're out in the garden, make sure that you're digging up any of your bulbs. It's the bulb time of year.
So when I say dig up bulbs, I mean all of your elephant ears, your canna lilies, your gladiolus, any of those annual bulbs should be dug up, put into paper bags for storage. If you're growing them in containers, you can just cut them back and put the container in the garage or the basement to make sure that it will stay cool, but it won't freeze.
On the other side of that, you want to start planting your spring blooming bulbs right now, you want to plant your garlic in late October, early November, you want to remove your vegetable plants that have those signs of disease, and don't compost again like I had mentioned.
00:22:39 Heather Zidack
The other thing that you want to do is you want to try to cover your soil in any of your garden beds. So a lot of the perennial garden beds that you have and a lot of your foundation plantings and things like that may already have mulch around them, so it might not be as important.
But for your vegetable gardens and things that you're turning over every year, it's important to make sure that that soil is covered for the winter. Some gardeners were able to put in some cover crops by now and have something to hold the soil, like plant material-wise, that they'll be able to turn in. However, at this point in the season, we recommend just using something like straw, leaf mulch. You can chop up your leaves and put them out onto the garden as long as they were disease free.
00:23:29 Heather Zidack
And what that does is when you break up your leaves and you chop them up first, it allows them to break down faster so that there's less cleanup for you in the spring instead of having like if you've ever seen outside the dense thick leaf patches that we tend to have in the spring where leaves have collected. You want to make sure that they're chopped up, they're fine and that they're able to be turned into the soil at the end of the season.
When you do, if you do have anything that you're turning in, so if you're going to do the leaves this fall and turn things in in the spring, it needs to be about three weeks before you're planting in the springtime. So, keep that in mind.
00:24:11 Heather Zidack
Make sure that you are cutting back any of your perennials, if fall cleanup is your goal, this is the time to do it. You want to cut back and leave one third of the perennials above the ground.
So, say you have a six inch perennial, you want to cut it back to a two inch stub and that's where you'll leave it for the fall if you decide to clean up now.
00:24:35 Heather Zidack
If conditions continue to stay dry like they have been, keep watering all of your trees, your shrubs, your perennials, especially your new plantings until the ground freezes. So we've still got a little bit of time that we should be watering with supplemental water.
We recommend one inch of water a week, which actually ends up being about, I think it's like 0.62 gallons per square foot. So that can help you kind of figure out how much water you need in a week for your plants.
00:25:07 Heather Zidack
And you want to wait till all your shrubs are dormant so their leaves have dropped before pruning in the fall. Do not prune any of your spring blooming shrubs.
So, you don't want to prune your hydrangeas. You don't want to prune your forsythia, your lilacs, anything like that because things likely already set their buds for next year already. So, if you prune them now, you could lose your flowers.
00:25:34 Heather Zidack
The other thing that we recommend is, like I said, you don't want to fertilize anymore at this point. You know, consider getting your soil tested now so that you can have those results in the spring and be able to hit the ground running.
00:25:48 Heather Zidack
And again, like I said, our office is open year-round to help support with any of these home garden houseplant questions that you may have.
00:25:59 Stephen Thal
And also you have a number of local gardeners, don't you, or grangers?
00:26:05 Heather Zidack
We do. We have county offices that will help with garden questions as well through our master gardener colleagues will help with identification and things like that. If it's disease questions, definitely send it to the Home Garden Education Center.
00:26:23 Heather Zidack
But the master gardeners at the county offices are also very well equipped to help with cultural questions, how to take care of plants, how to identify them, and some of these fall and spring cleanup tips as well.
00:26:36 Stephen Thal
Do you have many fruit plants that need to be taken care of, or are they all pretty much gone?
00:26:43 Heather Zidack
They're pretty well done the only one to keep in mind is your fall blooming raspberries or your fall fruiting raspberries those you want to prune after fruiting is complete otherwise you're going to be all set um mostly in the winter when things are totally dormant so we're looking at like March would be the time to start pruning your fruit trees.
00:27:04 Stephen Thal
Oh okay one other thing I forgot to ask you you also have to take clean your tools that you use the garden with.
00:27:12 Heather Zidack
Absolutely. That's a great winter chore. Clean your tools, especially if you're between pruning diseased plants.
The other thing is in the winter, it's great to not only clean your tools, but if you need to sharpen your tools or it's a good time also to make sure that you repaint all the handles so you can find them again when you have them in the garden.
00:27:34 Stephen Thal
Hey, Heather's going to give us the phone number one more time in case you missed it the first time.
00:27:40 Heather Zidack
Yes. So if you have any plant or garden questions, you can always call our office at 877-486-6271. Again, that's 877-486-6271.
00:27:55 Stephen Thal
That'll be great.
Well, thank you again for coming again to help our gardeners or people that have interested in starting gardens or plants or whatever. Great information.
Give my best to your whole team and I know when it comes around Christmas there's a lot of plants there that have to be protected once the season goes by.
00:28:20 Heather Zidack
Yes, yeah there's a lot of holiday plants that we could certainly talk about.
00:28:26 Stephen Thal
Okay well thank you again and wishing you and the whole team at UConn Plant and Garden Center continued success.
00:28:33 Heather Zidack
Thank you so much.
00:28:35 Stephen Thal
Stephen Thal with another segment on Focal Point.
I want to thank all of you for listening.
And a couple of things we want to remind you of is first, make sure that you wear a hat and dark glasses to protect your eyes against the sun all year around, particularly during the winter, particularly if we get snow, be a lot of glare.
00:28:59 Stephen Thal
The other item I wanted to mention is to make sure that you have an emergency plan and practice it. If you need any help with it, call your local fire department or police department and they can direct you to the proper resources to help you build one of these plans because someday that life may be somebody in your family that you save.
00:29:23 Stephen Thal
And also when you travel, make sure you know what the emergency rules are so that should you get into a situation, you know what to do.
00:29:33 Stephen Thal
So once again, thank you all for listening.
Stay safe and stay healthy.