Tomato hornworms are large green caterpillars that feed on the leaves of tomatoes and related plants. Hand-pick or control with Bacillus thuringiensis. Do not remove caterpillars that are covered in white pupae as they have been parasitized by beneficial wasps.
Check brassicas for cabbageworm, diamond-back moth caterpillars, cross-striped caterpillars, and cabbage loopers. Use row covers or Bacillus thuringiensis to control them.
Pick up, bag, and trash (do not compost) any dropped apples that show signs of apple maggot.