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How to grow leeks
- BBC Gardeners' World Magazine
Published: Monday, 9 March 2020 at 5:29 pm
Find out how to grow your own delicious leeks, plus find leek varieties to try, in our Grow Guide.
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Spacing:
30 apart
20 between rows
Leeks are a delicious vegetable with a long season and will provide food from August through the winter. The long, blanched stems, also known as shanks, can be eaten young and tender, or allowed to mature. Leeks are great in soups, steamed or stir-fried.
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How to grow leeks
Sow seed in pots or modules of peat-free seed or multi-purpose compost in spring. Keep pots moist and plant out in summer, either individually, using a dibber, or in small clumps. Harvest leeks from autumn. Some varieties are hardy and can be harvested right through to spring.
Growing leeks from seed
How to grow leeks - growing leeks from seed
You can sow leek seeds directly into well prepared soil and thin them later. However, the more reliable method is to sow into pots and transplant seedlings when they are about 20cm high. It’s also possible to buy seedling leeks from nurseries or by mail order.
Planting out leeks
How to grow leeks - planting leeks
Leeks need a sunny, sheltered site with well-drained, well prepared soil with plenty of added manure or fertiliser. To plant the traditional way, make a hole with a dibber, 20cm deep, drop a seedling in and water in. This method, called 'puddling in' will produce large single leeks with well-blanched stems. But you can also plant in small clumps.
Tending leeks
Keep plants well watered, especially during dry spells and keep weed-free with regular hoeing or with a thick mulch – this will also help retain moisture.
Harvesting leeks
How to grow leeks - harvesting leeks
Depending on which variety you’re growing, your leeks will be ready for picking from summer onwards. Use a fork to lift leeks singly or in clumps without disturbing neighbouring plants. Leeks can be left in the ground until you are ready to use them. Once harvested, they will store in the fridge or a cool larder for a couple of weeks.
Preparation and uses
Leeks are a classic soup ingredient but they are also a delicious accompaniment to winter dishes such as roasts, stews and pies. To prepare leeks, they will need a thorough cleaning to remove the soil, and the outer leaves can be discarded.
Looking for inspiration on how to use your leeks? Our friends at olive have curated a delicious collection of leek recipes, including a comforting chicken and leek pie.
Growing leeks: problem solving
How to grow leeks - problem solving
Leeks are prone to leek rust and to onion family diseases such as allium moth and allium leaf miner. These last two can weaken the plant and allow more damage from fungal and bacterial infections to take hold.
Leek varieties to try
How to grow leeks - varieties to try
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- Leek ‘Musselburgh’ – a reliable mid-season leek, with good flavour and texture. A good cropper, it is also very hardy and has good resistance to rust
- Leek ‘Pandora’ – an early variety, with long regular stems, this can be harvested from September to January.
- Leek ‘Lyon prizetaker’ – a heritage revival, with large thick stems that will last through the winter.
- Leek ‘Toledo’ - a reliable leek with long stems and dark leaves, that can be harvested from late November-late February. It has been awarded the prestigious RHS Award of Garden Merit.
- Leek ‘Sprintan F1’ – a very early cropping leek, ready to harvest from late August through to November, with good resistance to leek rust.
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