Ants on River Birch: Farming Aphids

The Connection

Ants tend aphids for honeydew. Check leaves for sticky residue and curled foliage—signs of aphids.

If honeydew present: apply soil systemic imidacloprid (Bayer Advanced) for aphids.
If no honeydew: ant baits (borax-based) at base control ants without harming tree.

Trees: Velvet Galls on River Birch: Mite Damage, No Treatment Needed; River Birch Near a Pool: Root Concerns & Construction Tips; Woolly Aphids on Big Maple: Systemic Soil Drench Stops Honeydew; River Birch Defoliated by Caterpillars: Identify, Spray Now, Prevent Next Year; Reviving a Wilted New River Birch; Assessing Survival of a Newly Planted Heritage River Birch; Leaning River Birch: Why Topping Is a Terrible Idea; River Birch Roots and House Foundation: Low Risk; River Birch Near Driveway/Foundation: Use Dwarf Cultivar; River Birch (Betula nigra): The Four-Season Star for Difficult Sites

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