Organic Cabbage Pest Control: Diatomaceous Earth and Cayenne Solutions

Stop Cabbage Worms Without Pesticides

Cabbage pests (cabbage worms, loopers, aphids, flea beetles) can be managed with two kitchen/garden staples that wash off completely at harvest.

Diatomaceous Earth (DE) - Mechanical Control

• How it works: Microscopic silica shells abrade insect cuticle → dehydration
• Application: Dust dry powder on dry foliage, especially leaf undersides and plant base
• Reapply after rain/dew—only works dry
• Food-grade only (not pool filter DE)
• Safe for harvest: Rinse produce—no residue concern

Cayenne Pepper Powder - Repellent

• Mix: 1 tbsp cayenne + 1 tsp liquid soap + 1 gallon water
• Spray weekly and after rain
• Repels: Caterpillars, aphids, beetles, mammals
• Washes off completely—no taste transfer

Integrated Cabbage Protection

1. Row cover (insect netting) at transplant—prevents egg-laying
2. Interplant with onions, dill, mint (repel pests)
3. Hand-pick worms daily (feed to chickens or drown)
4. Bt (Bacillus thuringiensis) for heavy caterpillar pressure—organic, specific

Identify Your Pest

• Green caterpillars + frass (dark pellets) = cabbage worms/loopers → Bt + DE
• Tiny shot holes in leaves = flea beetles → DE + cayenne + row cover
• Clustered gray aphids = cabbage aphids → cayenne spray + ladybugs

DE + cayenne + row cover = near-total organic control for most cabbage pests.