Apple Maggot Description: Adult apple maggot is a fly, slightly smaller than a common housefly. Apple maggots overwinter as pupae in the top 2-3" of soil. The adult flies emerge from early June to early September. Adult females do not lay eggs for the first 8-10 days after they emerge. Then they wander over apples, crabapples, plums and other crops, inserting eggs into fruit. White and yellow larvae, 1/4" to 3/8" long, hatch under the skin and tunnel all over. Apple maggot damage is almost impossible to cut out. Solution: Dispose of fallen, maggot-infested fruit before the maggots have a chance to leave the fruit and tunnel into the soil. Use Economy Red Sphere Traps with lure for mass trapping - 1 trap per dwarf, 6 traps per full-size tree. Use Surround At Home at green-tip stage (just when buds are beginning to grow green tissue). Apply at 1 to 2 week intervals. Application intervals may be widened to 2 to 3 weeks as new growth slows or when dry periods occur.