Adelgid or Scale on Shrub: Systemic Insecticide for White Substance on Limbs

Spreading Brown Patch with White Substance on 4-Foot Shrub

Shrub shows expanding brown area and white material on limbs—likely adelgid or scale insects. Immediate control needed to prevent death.

Treatment

Apply Bayer Advanced Tree & Shrub Insecticide (imidacloprid) soil drench per label. Systemic kills feeding insects in 1–2 weeks, protects 8 months. Available at Home Depot.

Why Systemic?

• Contact sprays miss insects under wax.
• Systemic reaches all feeding sites via sap.
• One application per season.

Act now—delay risks losing the shrub.