During fruit tree bloom, it is critical not to spray insecticides.
Insecticides can kill bees necessary for pollination and good fruit set.
Insecticides can kill bees necessary for pollination and good fruit set. Black rot causes black spots on grape fruit, leaves and stems. If disease was present last year, begin fungicide applications with the emergence of the second leaf. Insecticides can kill bees, which are necessary for pollination and good fruit set. Check flowering trees for bee activity.