Their large size and green color help them blend perfectly with tomato leaves. Tobacco hornworms have a red horn and white stripes – diagonal lines – on their abdomens. That means, most of the ...

These caterpillars are huge, and so are the moths that they grow into! A common feature of this species is the way it tends ...

John E. Woodmansee Photo: Tobacco hornworm on a tomato plant that has been attacked by a parasitic Braconid wasp. The white capsules on its back are the pupal stage of the tiny wasp. Braconid larvae ...

One of the crops where this is the biggest concern is tomatoes, which attract various pests, from tomato hornworms to thrips and aphids. One of the most effective—and rewarding—ways to prevent ...

Spray water on plants or run your hand over the leaves; this agitates the hornworms and makes them easier to spot. Shine a UV flashlight on your plants at night. The caterpillars glow under UV light.