🧅 Onion companion plants
Onions are compact and pungent, making them one of the best pest-confusing companions in the vegetable garden.
- Sun
- Full sun
- Water
- Regular watering until bulbs swell, then reduce
- Spacing
- 10–15 cm (4–6 in)
- Harvest
- 90–120 days from sets
Good companions for onion
- 🥕 Carrot
Mutual protection against carrot fly and onion fly.
- 🍅 Tomato
Helps deter aphids around tomato plants.
- 🥬 Lettuce
Keeps slugs and aphids away from leafy greens.
- 🥬 Cabbage
Strong scent helps confuse cabbage moths and loopers.
- 🍓 Strawberry
Helps deter pests without shading low-growing strawberries.