An overflowing basketful of fuzzy, blushing peaches is fulfilling sight. Pests can ruin a promising harvest if not properly taken care of. While peaches require considerable care to protect them and their harvest from harmful pests, the abundant harvest that results from careful cultivation will be an ample reward for your labors.
Spray your peach trees with a borer preventative every July and August. Once established, borers are difficult to eradicate. Peach tree borers are beetle larvae that furrow into the tree trunk and eat away at the tender inside wood.
Spray insecticide to prevent plum curculio, a worm that feeds on peach fruits. Make the first application when the blooms are pink, again when three-quarters of the petals have dropped and at two-week intervals thereafter.
Remove fruit affected by brown rot, a fungal disease that causes the fruit to disintegrate, from the ground and off the tree; spray fungicide every two weeks.
Spray fungicide in the fall when the leaves are dropping to prevent peach leaf curl, which affects new growth in early spring, causing it to be grossly misshapen and puffy.
Spray insecticide every few weeks to control the stink bug population. Stink bugs sting peaches, and the resulting spot decays and becomes malodorous.
Apply dormant oil in the winter to thwart scale insects that entrench themselves in the trees' limbs and trunk.