This pest overwinters as shiny black eggs on twigs and fruit spurs. The population decreases to a very low level during the summer months.
Organophosphate insecticides used during delayed dormancy are very toxic to honey bees.
Remove bees from orchard if cover crops or weeds are in bloom. Oil sprays may injure trees that are water stressed. It is advisable to postpone an oil application to water-stressed trees until winter rains have replenished soil water and the tree bark is noticeably moist. . . . Apply before blossoms open or injury may occur. Do not graze livestock in treated areas or feed them treated cover crops.