Onion
Allium cepa
- Layer 6 · Roots
- Edible companion
Status by region
No restrictions recorded in the lists we checked.
Checked against the European Union list (Regulation 1143/2014) · Portugal's national invasive species list (Decreto-Lei 92/2019) · the Madeira list (Decreto-Lei 92/2019).
Information based on the cited sources, not legal advice — always confirm your local rules.
About
One of humanity's oldest cultivated plants, the onion is indispensable in any vegetable garden or companion planting. It grows well in well-drained soil rich in organic matter exposed to the sun. Its strong aroma helps to repel various insects harmful to neighbouring crops.
It is harvested now — July is one of the harvest months.
See which trees the onion grows well with
We have no trees recorded with this species yet. Start from the tree on your land.
No account needed.
Needs
- Water: Medium
- Light: Full sun
- Size: Herbaceous plant up to 0.5 m
- Mature diameter: 0.2 m
- Soils: Loam, Sandy
- Climates: Atlantic coast, Inland / Continental, Hot, dry Mediterranean
Calendar
- January
- February — Planting
- March — Planting
- April
- May
- June — Harvest
- July — Harvest
- August — Harvest
- September — Harvest
- October — Planting
- November — Planting
- December
- Harvest
- Planting
Medicinal use: The bulbs are consumed raw or cooked, possessing antiseptic, expectorant and cardiovascular action.
Where to buy
Related plants
Other species in the same layer or with the same function.
It is harvested now — July is one of the harvest months.
See which trees the onion grows well with
We have no trees recorded with this species yet. Start from the tree on your land.
No account needed.
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