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Cabbage & Onions
✓ Excellent Companions
✓ Why Cabbage and Onions Work Well Together
✓Onion scent masks cabbage from cabbage butterflies
✓Reduces egg-laying by imported cabbage worm moth
✓Efficient space use with different harvest times
🔬 How It Works (Science)
- 1.Olfactory masking of brassica glucosinolate compounds
- 2.Volatile sulfur compounds from alliums interfere with pest host-finding
- 3.Confuses pest navigation to host plants
📋 Planting Tips
1Interplant onions between cabbage plants
2Use green onions/scallions for continuous harvest
3Plant onion sets for faster establishment
📏 Recommended Spacing
Onions every 4-6" between cabbage plants (18-24" apart)
📚 Sources & Research
- •IPM research
- •UK agricultural research
- •Organic pest control studies
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