Botanic Garden >> Gardening > >> Question and Answer >> Plant Species >> Trees

Copper Beech Aphids: Systemic Soil Drench for Large Trees

White aphids on leaf undersides, sticky honeydew, sooty mold on a 30-foot copper beech. Spraying the canopy is impractical.

Solution

Apply Bayer Advanced Tree & Shrub Insect Control (imidacloprid) as a soil drench. Roots transport it to every leaf. Aphids die on feeding. Full-season protection. Takes 1–2 weeks to reach canopy top. Available at garden centers.

Trees: Copper Beech Beech Bark Disease: Fungal-Scale Complex in Mediterranean Climate; Old Apricot Tree Sap Oozing: Bacterial Canker vs. Borer; Copper Beech Seed Germination and Tree Age: Expert Needed; Japanese Maple Borer: Trunk Spray or Soil Drench; Systemic Control of Scale on Large Mimosa Trees; Controlling Caterpillars on Weeping Cherry Trees; Merit 75WP Application for Weeping Cherry Borers; Tricolor Beech Leaf Scorch After Planting: Transplant Shock; Copper Beech Bonsai: Planting in Ground Not Recommended; Hemlock Woolly Adelgid Near Creek: Pointer Capsules vs. Soil Drench

Garden Articles

Copper Beech Early Seed Production: Age vs. Climate Triggers

Linden Tree Care: Gall Mites, Leaf Issues, and Treatment Options

Catalpa Near New Pavement: Monitor for Root/Canopy Conflict

Planting Impatiens After Bayer Tree & Shrub Insecticide: No Wait Needed

Bonsai Wire: Copper vs. Aluminum—Which Should You Choose?

Beach Vitex (Vitex trifolia subsp. litoralis): Salt-Tolerant Shrub for Coastal Gardens

Tree Recovery After Insecticide Burn

Plants

Transplanted Chinese Maple Losing New Sprouts: Root Shock

Mystery Tree Identified: Royal Paulownia (Princess Tree)

Dogwood Tree Not Blooming? Lawn Chemicals May Be the Culprit

Bagworms on Dwarf Evergreen: Recovery and Treatment

Pine Cone Absence in Massachusetts: Not Necessarily a Problem

Woolly Aphids on Big Maple: Systemic Soil Drench Stops Honeydew

African "Ewuro" Tree: Unknown by That Name