Companion plants for Onion
Allium cepavegetable
36 partners scored across pest control, nitrogen, root depth, shade and spacing.
Best partners
- Excellent pair
- Autumn Sage attracts Hoverflies, which prey on the Thrips and Aphids that attack Onion
- Onion acts as living mulch, keeping soil moist and weeds down around Autumn Sage
- Onion draws Bees and Bumblebees and more that improve pollination for both
- Excellent pair
- Bee Balm attracts Hoverflies, which prey on the Thrips and Aphids that attack Onion
- Onion acts as living mulch, keeping soil moist and weeds down around Bee Balm
- Onion draws Bees and Bumblebees and more that improve pollination for both
Planning a whole bed?
Build a season-long sowing and planting calendar around Onion β no account needed.
Also works well
- Agastache
- Athena melon
- Bishop's Flower
- Black-eyed Susan
- Bugloss
- CafΓ© au Lait Royal Dahlia
- Candytuft
- Cape Gooseberry
- Christiana Lavender
- Crenshaw melon
- Crimson Sweet melon
- Dead-nettle
- Emir melon
- Fernleaf Lavender
- Fernleaf Lavender
- Gingins Lavender
- Green Flesh Honeydew
- Green lavender
- Kohlrabi
- Lungwort
- melon
- Melon
- Orange-Fleshed Honeydew melon
- Ornamental Allium
Keep apart
Amaryllidaceae and Fabaceae are known to grow poorly together
Amaryllidaceae and Fabaceae are known to grow poorly together
