When to plant Spring Onions in Bath
Allium cepa
Spring onions are a fast salad onion for the UK garden. Sow little and often through spring and summer, or sow a winter-hardy variety to pick next spring. They take little space and grow well in pots.
30 cm · Full Sun · Moderate Water
Calibrated to Bath · average last frost around 24 Apr
| Activity | January | February | March | April | May | June | July | August | September | October | November | December |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sow outdoors | No | No | No | No | No | No | No | No | Yes | No | No | No |
| Harvest | No | No | Yes | Yes | Yes | No | No | No | No | No | No | No |
Growing guide
What to do through the growing season
Growing guide for
Change the guide to see different planting timelines and tips.
Sow a winter-hardy variety in autumn and overwinter it for an early spring harvest.
01
Sow Seeds in Autumn
8 Sept to 28 SeptSow a winter-hardy variety, such as White Lisbon Winter Hardy, from 8th September - 28th September. Sow deep in an open, sunny spot. If the weather is dry, keep the seedbed moist so they germinate before winter.
02
Winter Care
2 Nov to 12 Mar 2028Keep the bed weed-free through 2nd November - 12th March 2028. Cover with fleece or a cloche in hard frost. The soil must drain well, or plants rot.
03
Thin in Spring
25 Mar to 24 Apr 2028When growth resumes, around 25th March - 24th April 2028, thin to apart if the row is crowded.
04
Harvest
12 Mar to 26 May 2028 Dates as each sowing reaches this stagePull overwintered spring onions from 12th March 2028 once they are pencil-thick. Keep picking through 26th May 2028. They are ready earlier than spring-sown rows. Use them fresh.
Companion plants
Tap a plant to see why it works (or doesn't) with Spring Onion.
Good companions
Plants to avoid
Why companion planting matters
Companion planting can deter pests, improve pollination, and make better use of space. Some plants confuse pests or attract beneficial insects; others improve soil or offer shade to neighbours that need it.
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Spring Onion guides by town
See how Spring Onion timing shifts in other towns with different frost dates.