These guys usually start at the top of a tomato plant and eat the leaves, leaving only bare stems. To get rid of tomato horn worms, no need to use chemicals, simply wait till early morning or late evening when they come out to feed, and pluck him off the plant. One large tomato horn worm can do an amazing amount of damage, in a short period of time. If you have a pond, you can feed him to the fish!
Ever wondered just how do Tomato Horn Worms find your tomato plants? In the early morning or late afternoon you may see those large moths drinking nectar from your flowers, those are the tomato horn worms' parents!