When the affected leaves are shaken vigorously over a piece of white paper, the mites can be seen on the paper. Dormant oil will help control mites on trees and shrubs while lacewings may be effective in a greenhouse or hothouse. Kelthane applied according to the label will control severe infestations. Worms Worms are found on many plants and usually consume leaves or burrow into stems or roots. They may be treated with Dipel, Sevin, malathion, or diazinon.
Treatments are most effective when the worms are small.
The largest group of pests is the insects. Aphids are usually the first to appear and are found under dark green, wrinkled leaves. They can be treated with diazinon, Cygon, Orthene, or Thiodan. They are also a favorite food of ladybugs. Beetles and bugs soon appear as the weather warms.