How to identify
- Powdery gray-green clusters on leaves and flower buds
- Waxy coating that makes them look dusty
- Often tucked into broccoli heads or kale folds
Damage: Stunted growth, distorted leaves, and unmarketable heads.
Control methods
- Blast with water; remove heavily coated leaves.
- Harvest outer leaves often so colonies do not hide.
- Row cover on young plantings.
What products to use
We list product types and what to check on the label — not brand rankings, prices, or “we tested” claims. Always follow the label for your crop, and prefer the least disruptive option that works.
Insecticidal soap
When: Colonies persist after water sprays
Look for: Labeled for aphids on cole crops; soak the waxy clusters thoroughly