Next Caterpillar Onslaught
Just when I thought we had the cabbageworms under control, another caterpillar comes along and attacks another plant. This time it’s the sweet potatoes!
The culprit was pretty easy to find. I turned over the first leaf that looked promising and saw this…
They look a lot like tussock moth caterpillars, very similar to some that we had on the sunflowers earlier this summer. Sweet potatoes are supposed to be relatively trouble free, so this is a little surprising. After doing a little research, it sounds like you aren’t supposed to worry about late-season leaf eating pests on sweet potatoes until they are 30% or more defoliated. I don’t think we’re quite there yet, but we may treat anyway. The Dipel (Bt) would most likely be effective here as well. I’ll keep you posted.