New Azaleas with White Powder: Mealybugs or Scale—Return Under Warranty

White Rub-Off Substance on New Azalea Stems

Six new azaleas suddenly covered in white powder that rubs off. Not powdery mildew—likely mealybugs or scale crawlers. Washing and “damp off” spray won’t work.

Best Action

1. Return to nursery under warranty for clean replacements.
2. After replanting, wait 2 weeks, then apply Bayer Advanced Tree & Shrub Insecticide soil drench for season-long protection.

Why Not Treat?

Infested nursery stock indicates systemic issue. Replacement ensures clean start; preventive drench keeps them clean.