
They pitched a tent in my snapdragons—icky.
After spending two hours on the internet trying to figure out what the creepy caterpillars in my flowers were, I went to bed. My husband got on my computer to download some photos. I was just snugling down in my soft, comfy bed when my husband walked in and said “Why do you have a picture of tent caterpillars on your computer?”
Thank you, dear.
I always tell my kids “daddy knows everything, go ask him.” (He went to one of those fancy-shmancy ivy-league colleges, you know the one—it’s big and old, it’s in Cambridge, starts with an H.) I went to a state college with all the other mere mortals.
Anyhoo.
Yes, we have yet another infestation of yet another pest. This one was easy to cure though, all it took was a pair of Felco clippers and Voila!—good-bye creepy, black, hairy things.

I don’t know what they were doing in my snapdragons, because for the most part, tent caterpillars like deciduous trees.
On the East coast, they can be a problem. They overpopulate and decimate the trembling aspen. Even though trembling aspen is their favorite host, they can also defoliate most other species of deciduous trees, such as, elm, oak, ash, basswood, maple, birch, poplar, and birch.
A defoliated tree will grow new leaves late in the summer. If they are severly defoliated their growth may be stunted for a couple of years.
If you have them in your yard, you can cut them out and just drop them in soapy water.
In the wild, they will overpopulate quickly, but soon disease and natual preditors will bring their population down. They repeat this cycle every several years.
Common parasites of the species are the flesh fly (Sarcophaga aldrichi) and the ichneumonid wasp (Itoplectis conquisitor).
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