When to Plant Spring Onions in the UK

Spring onions grow quickly and can be planted across much of the growing season. Planting at the right time helps plants establish and produce steady harvests.

Spring onions are usually grown from seed planted directly into the soil.

Regular sowing can provide harvests for many months.

Spring planting

Spring onion seeds are often planted from March onwards, once soil becomes workable.

Cool weather usually produces steady growth.

Seeds germinate quickly in mild conditions.

Summer planting

Spring onions can also be planted in late spring and summer.

Small, repeated sowings often provide continuous harvests.

Growing spring onions in containers

Spring onions can be planted in containers filled with compost.

For container advice, see growing spring onions in containers.

Planning spring onion harvests

Because spring onions grow quickly, they can be planted several times during the season.

Most spring onions are ready to harvest within a few weeks to a few months, depending on growing conditions.

For growing advice, see how to grow spring onions in the UK.