Spiders are one of those creatures that humans fear. Most here in the Northeast are totally harmless, yet many times people run and occasionally hurt themselves trying to get away from them. As such, it is interesting to me that one of our most beloved plants is called “Spider Plant.” Its growth does superficially resemble a spider, but this one brings joy to its owners. In fact, it is one of the hardiest of all our houseplants.
Scientifically it is known as Chlorophytum comosum, and there is quite a bit of controversy in the scientific community over species. In the pictures accompanying this article, the differences in the leaves can be clearly seen. The great debate stems from (pun intended) differences in leaf shape. Scientists cannot decide on whether those differences represent phenotypic variation (changes in shape found within a population) or differences between species. And while it seems like this should be an easy task, look at all the differences seen in dogs, which are all the same species. While the leaves on our houseplants most likely represent different artificially selected cultivars (varieties), determining how many there are in the wild is difficult. Plants normally have some ability to change the shape of their leaves. For example, plants grown in shade tend to have larger leaves than those grown in full sun. These plants are native to South Africa, and tend to grown in forests, which could explain why such variation is seen in the wild. There were two other species listed for a while, but then those got lumped back in to C. comosum and their differences chalked up to environmental variation.
In reality, how many species there are does not really matter for us keeping these wonderful houseplants. What does matter is their forgiving nature. They grow and thrive in any typical houseplant soil. It is best to let the surface dry before watering again. They have an interesting root system that is part of the key to their success. The thick, tuberous roots store water, and that is why they can survive for much longer than other houseplants. When repotting, it is amazing how they fill the pot completely with roots. Although it sounds like this might become a problem, the Spider Plant does not mind. It responds with more leaves, and even babies.
The Spider Plant is easily propagated by planting the little plantlets that form along runners sent out by the mother plant. Simply plant these in typical houseplant soil, water well, and they will start to grow. As they do not have a fully developed root system yet, care must be taken to not let them dry out during the beginning stages. This plant is probably the most easily propagated houseplant. I still have one propagated by my first-grade teacher. It grew in the classroom when I was there, and two years later when my sister had the same teacher, it had produced babies that were sent home with each student. Despite all of life’s ups and downs, the plant is still going and thriving almost half a century later.
There are a number of interesting varieties of this plant. The leaves can be narrow, wide, or curled. The colors of the leaves are interesting as well, and can be found in any combination of leaf-types. There are green leaves with a white center stripe. Alternatively, there are green leaves with white edges. As one would expect, there are all green leaves too. Although I do not have one yet, there is a variety called ‘Hawaiian’ that has a green leaf with a yellow center. Don’t be fooled by some so-called Spider Plants that are purple – those are actually Tradescantia, or Spiderworts, which are a totally different species of plant native to the Americas. No matter which variety is chosen, with proper care Spider Plants could bring the owner enjoyment for a lifetime!
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