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Colin · CC BY-SA 3.0

Onion

Plant·Allium cepa

Biennial

Full sun

Sun

Medium

Water

Well-drained soil

Drainage

Zones 5–10

Hardiness

Onion (Allium cepa) is a plant. It grows well with asparagus, cabbage and turnip.

Data under review — our AI flagged a concern with this entry. Full details will return once verified.

Through the year

DormantFloweringFruitingReady to harvestDying back

Works well with

from wiki data

Asparagus Cabbage Turnip Yarrow Beetroot chard Brussels sprouts Summer savory Broccoli Kohlrabi Winter savory Kale Parsnip Salad rocket Pepper Celery celeriac Carrot German chamomile Collard greens

Keep apart from

Common beanavoid pairing Garden peaavoid pairing Broad Beanavoid pairing

Where this comes from

Parsed11 Sept 2026

ConfidenceNot recorded

Photograph Colin · CC BY-SA 3.0

Plan with perma