Weeping Cherry Leaf Curl and Yellowing: Aphid Damage and Treatment

Diagnosing the Problem

Curling leaves with yellowing and tiny black spots—especially after organic insecticide failed—strongly suggest aphid infestation. Aphids cause leaf curl by feeding on sap; honeydew excretion leads to sooty mold (black spots). Dry summer stress exacerbates damage.

Recommended Systemic Treatment

Apply Bayer Advanced Tree & Shrub Protect & Feed (imidacloprid + fertilizer) as a soil drench around the tree. Benefits:

• Roots absorb insecticide and translocate to all foliage—kills aphids as they feed.
• Fertilizer component boosts overall tree vigor and recovery.
• Season-long protection with one application.

Product link: Bayer Advanced Protect & Feed

Why Soil Application Beats Spraying

Newly planted trees have tender foliage easily damaged by sprays. Soil drench avoids phytotoxicity, covers the entire canopy (including unreachable tops), and provides residual control through the growing season.