Controlling Black Cherry Aphids and Ants on Cherry Trees

Breaking the Ant-Aphid Cycle on Young Cherry Trees

The black insects are black cherry aphids, which secrete honeydew that ants "farm." Controlling the aphids eliminates the ants' food source. Affected leaves curl, stunt, and develop sooty mold on the honeydew.

Integrated Management Strategy

• Insecticidal spray: Apply a systemic insecticide labeled for black cherry aphids (e.g., acephate/Orthene) when aphids appear. Systemic products move through the plant, reaching aphids inside curled leaves.
• Physical barrier: Wrap the trunk with paper and apply Tanglefoot (sticky barrier) to prevent ants from climbing.
• Timing: Treat early in spring when aphids first colonize new growth.

Consult your local nursery for approved products in your area.