Diagnosing Yellowing Boxwood Leaves with White, Papery Edges

Diagnosing Yellowing Boxwood Leaves with White, Papery Edges

When boxwood leaves turn yellow at the edges, then become white and paper-thin, an insect infestation is often the cause. Sap-feeding pests such as spider mites, scale, or leafminers can produce these symptoms by damaging leaf tissue and disrupting nutrient flow.

Recommended Preventive Treatment

Apply Bayer Advanced Tree and Shrub Insecticide as a soil drench around the base of each plant. The systemic action moves through the roots to the foliage, killing a broad spectrum of insects within a week. This also provides up to a year of residual protection.

Additional Checks

• Examine leaf undersides for tiny moving dots (spider mites).
• Look for small bumps on stems that scrape off easily (scale).
• Check for winding trails inside leaves (leafminers).

Early intervention prevents permanent aesthetic damage and plant decline.