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Treating Scale on Mature Water Oaks with Systemic Insecticide

Bayer Advanced for Scale on 70-Foot Water Oaks

A Georgia homeowner has 70-year-old, 50-foot water oaks with scale. They ask if soil-applied Bayer Advanced will work and how long it takes.

Answer

Yes, it works. Uptake is slower in tall trees, but spring application (during leaf expansion) speeds transport via transpiration pull. Expect visible scale reduction in 2–3 weeks with normal rainfall.

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