Aphids on Large Oak: Soil Systemic Better Than Trunk Injection or Spray

Options Ranked

Soil drench imidacloprid (Bayer Advanced) — easy, safe, season-long, no drift.
Trunk spray — requires high-pressure equipment for large canopy.
Trunk injection — wounds tree; not recommended for aphids.

Orthene spray is safe once dry. Keep pets inside during application.

Trees: Borers in Young Live Oak: Identification and Treatment with Spinosad; Young Oak Vertical Bark Cracks: Stress Injury, Consider Replanting; Oak Galls (Horned/Gouty): Cosmetic, Not Lethal; Red Oak Aphid Infestation: Systemic Treatment Timing and Pruning Coordination; Managing Excessive Acorn Production in Oak Trees; Decay Fungi vs. Oak Wilt in Tennessee Oaks; Building a Deck Near a Massive Coast Live Oak; Best Oak for Central Florida Sandy Hill: Consult County Forester; Oak Root Cutting for Front Entrance: 200 Degrees Intact; Transplanted Oak Tree with Top Dieback: Assessment and Care

Garden Articles

Plants