Sowing leeks is a fun gardening activity that results in a delicious and versatile vegetable. This guide offers comprehensive instructions and tips on how best to sow and grow leeks. Here we cover the different types of leeks, such as early, mid-early and late leeks, and the optimal times and methods for sowing this vegetable in the Netherlands.

Best time for sowing leeks in the Netherlands

In the Netherlands, it is best to start pre-sowing leeks in January indoors in a propagator or greenhouse, especially if you want to grow early leeks. For a later start, such as in March or April, you can sow leeks directly outdoors in the vegetable garden or in a greenhouse. It is important to take into account the last frost after the icing season before permanently moving young plants outside.

Sowing leeks: how to do it?

A successful leek harvest begins with optimal soil preparation. Introducing plenty of garden compost or well-digested manure, preferably in the fall, is essential. Worm manure is an excellent way to enrich the soil. Leeks grow best in open ground, but can also be grown in large, deep containers or raised beds.

Traditional method

Traditionally, leeks are sown in a seedbed outside the vegetable garden, then the young leeks are transplanted to the main vegetable garden in early summer. This saves space in the early growing season.

Sow in January

For sowing in January, use seed trays or pots with potting soil. Sow the leek seeds thinly and cover them with a layer of potting soil, keeping the soil warm and moist.

Sow in March or April

Sow the leek seeds 1 cm deep in rows 15 cm apart. This can be done both indoors in grow boxes and outdoors in the open ground.

Sowing leeks in brief

1. Preparing seed trays: Fill your seed trays or pots with potting soil and sow the leek seeds.
2. Germinate and repot: Once the seedlings are germinated and strong enough, transplant them to P9 pots.
3. Getting used to outdoor conditions: Gradually get the plantlets used to outdoor conditions by putting them outside longer each day.
4. Transplant after icy days: After the last frost, you can transplant the plantlets in your vegetable garden beds or full soil with a planting distance of 20 to 30 cm between plantlets and 30 to 40 cm between rows.
5. Watering and care: Water leeks regularly and make sure the soil is kept moist, but not too wet.

Growth and harvest

Leeks take about 75 to 100 days to ripen, depending on the variety. Harvesting leeks is done when the stalks are sufficiently thick. Winter leeks can be harvested in winter and offer a delicious addition to winter dishes. When harvesting, consider the distance between plants to avoid damage.

Conclusion

Growing leeks is a satisfying experience with delicious rewards. By investing proper care, attention and time, you can enjoy fresh leeks from your own garden. Covering all aspects of growing leeks, from pre-sowing to harvesting, this guide provides you with the knowledge and expertise to be successful in your vegetable garden.