Aubergines Companion Plants
Aubergines are tender, heat-loving plants and, for reliable crops in Britain, are usually grown in a greenhouse or polytunnel. In the warmest, sheltered gardens they may manage outdoors during a good summer. Companion planting is mainly useful for organising compatible pots and flowering plants; claims of improved yields or pest control are limited.
Good companions for Aubergines
| Plant | Why it helps |
|---|---|
| Basil | Basil shares aubergines' need for warmth and can grow in its own pot nearby, making a practical greenhouse combination. |
| French marigolds | French marigolds fit around container edges and provide flowers for insects, though they have no proven ability to prevent greenhouse pests. |
| Peppers | Peppers suit the same warm protected environment, but give both crops individual containers or generous spacing for air movement. |
| Spring onions | Spring onions remain narrow beside greenhouse containers and can be harvested before aubergine foliage becomes dense. |
| Lettuce | Cut-and-come-again lettuce can use bright space early in the season, then be removed if shade or humidity increases. |
| Coriander | Coriander can be raised in a separate pot under glass and allowed to flower for insects when conditions are suitably ventilated. |
Keep Aubergines away from
| Plant | Why to separate them |
|---|---|
| Tomatoes | They can share a greenhouse, but crowding tomatoes with aubergines reduces airflow and may make humidity-related problems harder to manage. |
| Cucumbers | Cucumbers favour higher humidity than aubergines, so a tightly mixed greenhouse planting can compromise ventilation and disease management. |
| Potatoes | Potatoes and aubergines are closely related, sharing some diseases and pests; avoid using the same soil or rotation space. |
Tips
Start aubergines early or buy sturdy plants, then plant out only after nights are reliably mild. Grow one plant per large container or at least 45 cm apart in a warm, sunny greenhouse border. Keep compost evenly moist, ventilate on hot days and support heavy stems. Inspect regularly for aphids, red spider mite and whitefly.
Aubergines companion planting: frequently asked questions
What are good companion plants for aubergines?
Good companions for aubergines include Basil, French marigolds, Peppers, Spring onions, Lettuce, Coriander.
What should you not plant near aubergines?
Keep aubergines away from Tomatoes, Cucumbers, Potatoes.
How does companion planting help aubergines?
Aubergines are tender, heat-loving plants and, for reliable crops in Britain, are usually grown in a greenhouse or polytunnel.
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Companion planting is a traditional practice; results vary with your climate, soil and garden. Page updated 19 Sep 2026.