When to Plant Leeks in the UK

Leeks grow slowly and are usually planted early in the growing season so they have time to develop before autumn and winter. Planting at the right time helps leeks grow steadily and produce strong stems.

Leeks are usually started from seed and transplanted later.

Starting leek seeds

Leek seeds are often started indoors between January and March.

Seeds grow steadily in cool conditions.

Young plants are usually ready to move outside in spring.

Transplanting leeks outdoors

Leeks are often transplanted outside between April and June, once soil becomes workable.

Spacing plants properly helps stems develop well.

Leeks grow slowly but steadily through the season.

Growing leeks in containers

Leeks can be transplanted into deep containers filled with compost.

For container advice, see growing leeks in containers.

Planning the leek growing season

Planting leeks early gives plants time to grow before cooler months.

Leeks are often harvested in autumn and winter.

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