Posted in Interesting Worms Pest Worms

Catawba Worms and What They Eat

We recently received an interesting question from a reader concerned about Catawba worms and Royal Empress trees. The reader has planted a Royal Empress tree in his yard, but he also wants to plant a catalpa tree because these trees attract Catawba worms (in fact, catalpa trees are often called “Catawba trees”), which are excellent fish bait because of their tough skin (fish can’t just pick them off the hook). The reader has a pond on his property that his brother loves to fish in, and hence the desire for a catalpa tree and the Catawba worms that feed on their leaves. The problem is this: Royal Empress trees are very similar to catalpa trees, so the reader fears that if he plants the latter, the Catawba worms will show up and feed on both trees, not just the catalpa tree. So, the reader is essentially wondering how discriminating Catawba worms are in their tastes. Will they only eat catalpa trees, as they are famous for doing, or will they also eat similar trees, like Royal Empress trees?