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Giant Willow Aphid Control on Large Trees

Giant willow aphids cause branch dieback and honeydew. Treat with garden insecticide containing esfenvalerate, bifenthrin, or permethrin. Large trees may need professional application for coverage.

About Gardening: Willow Tree Borers: Sapsucker Holes vs. Insect Damage; Managing Aphid Honeydew on Garden Plants and Large Trees; Aphids and Sooty Mold on Corkscrew Willow: Contact vs. Systemic Control; Black Scaly Substance on Willow: Soft Scale Infestation; Giant Willow Aphids: Identification and Control; Woolly Aphids on Big Maple: Systemic Soil Drench Stops Honeydew; Willow Yellowing & Black Branches: Water + Check for Insects; Willow 25 m from House: No Subsidence Risk; Willow Flea Beetles: Annual Invasion & Systemic Prevention; Globe Willow Aphid Infestation: Sooty Mold and Systemic Control

Garden Articles

Willow Tree Encroachment and Property Line Liability

Dog-Damaged Weeping Willow: Will It Sprout Back?

Willow Recovery After Pond Herbicide Treatment

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Aphids on Christmas Trees: Why They Appear Indoors and Safe Removal Methods

Weeping Willow with No Leaves: Time to Say Goodbye

Replacing Willow Oak: Red Maple, Red Oak, River Birch, Beech

Plants

Weeping Willow with Bark Loss and Deformity: Internal Decay, Removal Advised

Curly Willow Leaf Drop: Drought Stress, Not Disease

Weeping Willow Red Spiky Patches: Adventitious (Air) Roots, Not Borers—Harmless, Dry Up

Red Spikes on Willow Trunk? It’s Borer Frass—Here’s What to Do

Woodpecker Damage and Borer Infestation in Willow Trees

Willow Weevil/Leaf Beetle: ID First, Then Treat

Willow Tree Partial Leaf Yellowing: Water Needs and Trunk Check