Sticky Substance on Red Maple: Aphid Honeydew and Non-Toxic Cleanup

Cause

Sticky residue on leaves and ground is honeydew from aphids. Natural predators usually control them, but outbreaks happen.

Wash off with water or plant wash.
Atomic Grow foliar spray: claimed to clean leaves and boost plant sugar levels, reducing aphid appeal.
Monitor; treat only if heavy infestation persists.

Healthy trees tolerate minor aphid populations.

Plant Diseases: Japanese Red Maple Post-Transplant Leaf Spots: Need Photo; Phyllosticta Leaf Spot on Red Sunset Maple: Spring Fungicide and Fertilizer; Glory Red Maple Leaf Browning in Florida: Transplant Shock vs. Drought; Wax Scale on Japanese Maple: Identifying the White Domes and Timing Your Treatment; Black Spot Fungus on Mature Maple: Why Fall Cleanup Beats Spring Spraying; Best Red Maple Varieties for Long-Lasting Fall Color in the South; Japanese Maple Leaves Turning Green in Summer; Identifying and Treating Sticky Honeydew on Indoor Lemon Trees; Japanese Maple Leaf Scorch: Recovery and Prevention; Diseases of the Japanese Red Maple Tree

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