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Birch Tree Top Leaf Loss: Aphid Infestation Systemic Treatment

Diagnosing the Defoliation

Birch losing top leaves with history of fall green bugs—aphids are the chronic birch pest. They feed on leaf undersides, causing curling, browning, defoliation. Fall presence indicates year-round cycles in South.

Why You See Them in Fall

Aphids peak in spring/fall. Summer heat may reduce visible numbers, but they're present. Check leaf undersides before fall—they'll be there.

Systemic Solution

Bayer Advanced Tree & Shrub Insecticide (imidacloprid) soil drench at base—kills aphids systemically in 2 weeks, protects 12 months. Won't kill tree; birches tolerate aphids but look awful.

Alternative: Fungal Leaf Spot

If no aphids found, fungal leaf spot can cause early drop. But aphids are #1 birch issue. Treat systemically; monitor.

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