I bought a cherry tree (Mesabi) around 2003, and it has been quite nice....

Asked March 27, 2014, 12:51 PM EDT

I bought a cherry tree (Mesabi) around 2003, and it has been quite nice. Except last summer each of the cherries contained a small white worm around the size of a maggot. I have been told the only solution is to remove the tree, since the flies that produce the worms are now an infestation and all future cherry yields will have the same problem. What is your opinion?

Hennepin County Minnesota

1 Response

Most fruit flies can be controlled with a combination of detection, sanitation, and insecticides. Monitor for fruit flies with yellow sticky cards placed in the tree canopy shortly after bloom. Apply insecticide as soon as the first adults are caught on sticky cards. If necessary, a second spray can be applied ten days later. Insecticides that can be used to control fruit fly are acetamiprid, carbaryl, malathion and spinosad. Remove and dispose of all infested fruit. http://www.extension.umn.edu/garden/yard-garden/fruit/integrated-pest-management-for-home-stone-fruit-growers/cherry-fruit-flies/ http://www.extension.umn.edu/garden/yard-garden/fruit/integrated-pest-management-for-home-stone-fruit-growers/spotted-wing-drosophila/index.html