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Growing Leeks

Jan F M A M J J A S O N Dec
  S S P P P            

(Best months for growing Leeks in USA - Zone 5a regions)

S = Plant undercover in seed trays. P = Plant in the garden.

  • Easy to grow. Grow in seed trays, and plant out in 4-6 weeks. Sow seed at a depth approximately three times the diameter of the seed. Best planted at soil temperatures between 46°F and 86°F. (Show °C/cm)
  • Space plants: 4 - 8 inches apart
  • Harvest in 15-18 weeks. Loosen with a fork rather than pull by hand..
  • Compatible with (can grow in same bed): Carrots
  • Almost ready to use
    Almost ready to use
  • Leek
    Leek

A member of the onion family. Looks rather like a large scallion or spring onion Grow in seed trays or punnets until about 20cm (8in) tall. They look rather like large blades of grass at that stage. Then plant out into trenches or individual deep holes. The aim is to blanch the stems while the plants are growing. Trenches should be about 20-25cm (8-10in) deep. Set the seedlings 10-15 cm (4 - 6in) apart then add enough soil to just cover the roots. As the plants grow fill the trench. Otherwise - make holes with a dibble or suitable stick 15 cm (6 in) deep and 3-4 cm (1.5 - 2 in) wide. Drop a seedling in each and water enough to cover the roots with soil. As they grow, watering will gradually fill the hole.

Leeks prefer moist clay soils. Keep soil moist and loose, mulch will help.

Culinary hints - cooking and eating Leeks

Trim off the roots and any damaged leaves.
Young ones can be used whole with some of the green leaves
Wash thoroughly as the earth tends to get inside.
Chop and fry in butter (or olive oil) until tender.
Can be added to casserole meals, allowing time to cook through.
Leek and mushroom make a tasty combination for a tart filling.

Your comments and tips

15 Jan 17, pheello (South Africa - Semi-arid climate)
Where can I buy leek plant. As vegetable. Please list shops that sells leek
04 Dec 16, Chris (Australia - sub-tropical climate)
How long can i leave leeks in the ground and still be edible ?
05 Dec 16, John (Australia - temperate climate)
In southern climates they can be left in the ground until early Spring. I hope someone from the sub-tropics sees you question and can answer better.
31 Aug 16, Heidi (Australia - temperate climate)
I have always had trouble growing leeks. When I transplant them from bought seedlings, they don't thrive and fatten up. Someone suggested I leave them in clumps and this seems to work. What is the reason they don't like being on their own?
17 Dec 16, Kathy (Australia - temperate climate)
G'day Heidi, I also have trouble growing Leeks & I also want to know why they don't like being on their own. I'll be keen to know what people suggest to you & I'll try it myself. Mate, I just wanted to let you know your not on your own !!!!!!
23 Apr 16, andy (Australia - sub-tropical climate)
when topping up the soil around the leek as it grows, how can i tell where on the stalk i need to cover up to?
03 Sep 15, Denis Hopking (Australia - sub-tropical climate)
How do I keep bandicoots out of my garlic and leek patch?
16 Feb 15, rod smith (Australia - temperate climate)
if i prune leeks back will they regrow or if i plant the bulb will i get more leeks
06 Apr 15, Pete (Australia - temperate climate)
If you cut the leek about 25mm or so above the roots (leaving the bulb bit) it can be replanted. Haven't tried it myself but a few people have said it works.
27 Nov 14, Lee (Australia - temperate climate)
How can I tell when my leeks are ready to harvest? Most have pods which haven't opened as yet.
Showing 1 - 10 of 82 comments

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This planting guide is a general reference intended for home gardeners. We recommend that you take into account your local conditions in making planting decisions. Gardenate is not a farming or commercial advisory service. For specific advice, please contact your local plant suppliers, gardening groups, or agricultural department. The information on this site is presented in good faith, but we take no responsibility as to the accuracy of the information provided.
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