Non-Chemical Management
- Control weeds.
- Encourage natural predators including ladybird beetles, lacewings, syrphid (hover) fly larvae, and parasitic wasps. Avoid use of broad-spectrum insecticides which kill beneficial insects.
- Hand-wipe or prune to control small, localized infestations when practical.
- Wash aphids from trees with a strong stream of water.
- Control honeydew-feeding ants, which may protect aphid colonies from predators.
- Provide proper nutrition. High levels of nitrogen encourage aphid reproduction. Switch to a slow-release or low-nitrogen fertilizer.
Select non-chemical management options as your first choice!