Non-Chemical Management
- Syrphid fly larvae are important predators of the leafgall aphids, and will feed on them inside the galls. Avoid use of broad-spectrum insecticides which kill these and other beneficial insects such as ladybird beetles and parasitic wasps.
- Pick and destroy galls to improve appearance of aesthetically important plants.
- Avoid frequent shearing and overfertilization, which encourages succulent new growth favored by aphids.
- The non-gall-forming aphids may be washed off plants with a strong stream of water. This method is ineffective on leafgall aphids.
Select non-chemical management options as your first choice!
