Rain-like dripping from birch = honeydew from aphids. Sticky residue on driveway confirms it.
Spray Orthene (acephate) on all foliage (both sides) and stems. Systemic action helps. Repeat in 7–10 days for full coverage.
Apply Bayer Advanced Tree & Shrub Insect Control (imidacloprid) to soil around tree. Roots translocate to canopy—kills aphids as they feed. Lasts full season; takes 1–2 weeks to reach top.
Product: Bayer Advanced Insect Control
Use both: Spray reachable growth now with Orthene for immediate relief, and apply Bayer soil drench for residual protection. Best of both worlds.
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