Question: My plums have worms in them. Can they be stopped?
Answer: Those are plum curculio worms, main problem for both peach and plum fruits. You need to spray several times during the spring to prevent their entry. Apply a labeled insecticide while the tree is in full bud (before the flowers begin to open), when 75 percent of the petals are on the ground (this spray should be made in late evening so you won’t harm the bees), and on 10- to 14-day intervals until harvest. Include a fungicide with each spray to protect the fruit from disease.