🌱 Red Onion
UK growing data for Red Onion.
| Spacing | 13 cm apart |
|---|---|
| Sowing method | Start under cover, transplant out |
| Frost hardy | No |
| Sun | full-sun |
| Plant family | Amaryllidaceae |
How deep and how far apart should I sow Red Onion?
For Red Onion, space plants 13cm apart.
Is Red Onion frost hardy?
No. Red Onion is not frost hardy. Do not put it outside until the risk of frost has passed in your area, and be ready to fleece it if a late frost is forecast.
Sowing data cross-checked against RHS growing guides and UK seed-merchant catalogues. Soil temperatures are the minimum for reliable germination, measured at seed depth.
Know when your soil is warm enough
myPatch tracks real soil temperature for your postcode and tells you the day red onion is safe to sow.
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