Determine the products you plan to use and prepare a timetable to follow. They multiply very rapidly in early spring and late fall. Beetles - Flying insects that eat large portions of the flowers, buds and sometimes even the foliage. They appear mostly in mid to late summer. Borers - A larvae that enters fresh cuts and bores down the center of the cane.
Damage is most evident when winter pruning, although the insect is active in late summer.
Caterpillars - Larvae of moths and butterflies that appear sporadically in summer. They mostly eat the young flower buds and new shoots. Also, mostly evident in mid-summer. Spider Mites - Very minute arachnids that give a salt and pepper appearance to the underside of leaves. Can defoliate from the ground up and stop any new growth when severe.