Welsh onion
8
8
3Will it grow where I live?
Welsh onion is hardy to zone 4 – that covers all of Central Europe and the British Isles, and every USDA zone from 4 upwards.
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Profile
- Family
- Alliaceae
- Habit
- perennial
- Height
- 1.3 m
- Spread
- 0.6 m
- Growth
- slow
- Lifespan
- 8 years
- First yield
- after 2 years
- Hardiness
- zone 4–10
- Shade tolerance
- full sun
- Soil
- Sand, Silt, Loam
- Soil moisture
- semi-dry – very moist
- pH
- 6 – 7.5
Flowering & harvest
| J | F | M | A | M | J | J | A | S | O | N | D | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Flowering |
Uses
Frequently asked questions
Welsh onion: how big does it get?
Welsh onion (Allium fistulosum) grows as a perennial and reaches roughly 1.3 m in height when mature, with a spread of about 0.6 m. Growth is slow.
Welsh onion: what site does it need?
Welsh onion tolerates full sun. Suitable soils are Sand, Silt, Loam. Soil moisture should be in the range semi-dry – very moist. The pH may lie between 6 and 7.5.
Welsh onion: is it hardy?
Welsh onion is listed as hardy in zone 4–10 and survives normal winters outdoors there.
Welsh onion: will it grow in Central Europe?
Welsh onion is hardy to zone 4 – that covers all of Central Europe and the British Isles, and every USDA zone from 4 upwards.
Welsh onion: when does it flower?
In a temperate northern-hemisphere climate it flowers from June to July.
Welsh onion: is it poisonous?
No toxicity is recorded for Welsh onion. With wild plants, never rely on a database alone — only on a confident identification.
Welsh onion: what is it used for?
Rated on a scale up to 10: Edible 8/10, Medicinal 8/10, Other uses 3/10.
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Community experience
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