A strong spray of water drives them away but doesn t destroy them. They come back home. Better to spray thoroughly with Malathion or Isotex, mixed with some Volck Oil to make the insecticide stick. Warming summer weather brings out hordes of aphids. They love pyracantha , flowering fruit trees and almost everything.
Aphids are usually small, yellow or green flys.
They are a sucking insect and can be destroyed by regular application of Malathion and Volck Oil. Remember June brings in the heat of summer. While trying to protect new leaves from the strong sun it is still necessary to allow at least a few hours of morning sun. Too much shade will encourage rampant green growth. Heat suggests more water care.