Identifying and Controlling Mealybugs and Woolly Aphids on Houseplants

White, Cottony Pests on Your Plant? It's Likely Mealybugs or Woolly Aphids

If you see tiny white, cotton-like clusters on leaf undersides and stem joints, you're dealing with sap-sucking insects—either mealybugs or woolly aphids.

Quick Control for Small Infestations

Dip a cotton swab in rubbing alcohol and dab each cluster. This kills on contact and is safe for most plants.

Systemic Treatment for Larger Problems

For widespread infestations, use a systemic insecticide containing imidacloprid (e.g., Bayer Advanced Tree & Shrub Insect Control). Apply as a soil drench; the plant absorbs it and kills feeding insects for months.

Prevention

Inspect new plants before bringing them indoors. Isolate infested plants to prevent spread.