Once a hornworm has been injected with braconid wasp eggs, its life cycle starts to deteriorate. If you find a hornworm in your tomato patch covered with wasp cocoons, leave it alone. Allow the ...

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 ...

Hold a piece of white paper against the plant. Tomato branches with missing leaves will be evident. Once large caterpillars are found, they are often parasitized by tiny braconid wasps. The cocoons of ...