How To Raise A Tomato Hornworm . The worms will begin to bury themselves into the soil, a process which may take a few hours. The cat will overwinter as a pupa. EnviroTip 1 Tomato Hornworms Feeling The Love The Resilient Activist from www.theresilientactivist.org Remember, they can’t hurt you as they don’t bite or sting. A short demonstration video on how i raise my own tomato hornworm moths and caterpillars to feed my reptiles. As i read on about them, i found that many call the sphinx moths hummingbird moths.