When you see it, you know there’s a tomato hornworm nearby on your plant leaves. Spraying the leaves and soil with Bacillus thuringiensis (Bt) Spray as soon as you notice the young caterpillars ...

Have you ever seen a big green hornworm chewing on tomato plants with white cocoons on its back? That hornworm has been attacked by a parasitic wasp – he’s a goner, so no control is needed. (See ...