Spotted tomato hornworms or tomato hornworms are the ... I suggest considering the use of Bacillus thuringiensis or Bt, a natural bacteria-based insecticide that specifically targets and ...

As well as Bt, neem oil and insecticidal soap can be effective against young caterpillars. Tomato hornworms are targetted by parasitic wasps that lay their eggs in the caterpillar. The larvae will ...