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Persistent Aphids on Mayday Tree: Systemic Solution

Every spring aphids infest a mayday tree, covering the deck with sticky honeydew. Annual spraying kills them for the season, but they return each year. The owner wants a permanent solution.

Soil-Applied Systemic Insecticide

Apply Bayer Advanced Tree & Shrub Insect Control (imidacloprid) as a soil drench around the tree in early spring. Roots absorb it and move it to leaves and stems; aphids feeding on sap are killed. One application protects all season.

Product link: Bayer Advanced Tree & Shrub Insect Control

Note: Availability may vary in Canada; check local regulations.

Trees: Managing Aphid Honeydew on Garden Plants and Large Trees; Aphids and Sooty Mold on Corkscrew Willow: Contact vs. Systemic Control; Plum Aphids in Curled Leaves: Atomic Grow and Pure Neem Oil; Apple Tree Woolly Aphids: Atomic Grow Organic Cleanup and Vigor; Oak Tree Honeydew Dripping: Aphids or Scale, Systemic Solution; Tree Dripping Sticky Sap with Flies and Bees? Aphid Honeydew; Woolly Aphids on Big Maple: Systemic Soil Drench Stops Honeydew; Transplant Shock in a Large Mayday Tree; Controlling Aphid Honeydew on Elm Trees with Systemic Insecticides; Ficus Tree Seasonal Leaf Drop: Normal Behavior and Care

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