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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 = Sow seed

  • 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 beside): Carrots

Your comments and tips

10 Aug 15, Brianna Mckenzie (Australia - sub-tropical climate)
Most leeks mature 100 to 120 days after sowing the seeds, but a few varieties mature in as few as 60 days. Begin the harvest when the stalks are about an inch across. Depending upon your climate, you could be harvesting leek plants from late summer until early spring. Picking leek plants that mature at different times of the year lets you extend the harvest.
10 Sep 14, Glenn (Australia - temperate climate)
Which variety of leek are perennial?
18 Oct 14, Chris (Australia - temperate climate)
Any type which produces offsets (baby plants growing off the base of the stem) potentially perennial. You leave or transplant any offsets when you harvest the main plant. Allium ampeloprasum var. ampeloprasum is a perennial or multiplying variety.
12 Jun 14, (USA - Zone 8a climate)
13 Jun 14, Andrew (Australia - temperate climate)
It means to exclude light from the stem. That is what creates the white, tightly packed section of the leek, which is the bit we like to cook with. There are two main ways to achieve this: 1. As the plant grows, pack soil around the stem; or 2. Plant seeds or seedlings in a trench (about 10cm deep) and as the plant grows fill in the trench. Hope this helps.
05 May 14, Amith (Australia - temperate climate)
I tried sawing the seeds in trays, but no seedlings emerged, even after 3 weeks. I tried many times, but none was a success. Not sure what I am doing wrong. I live in Melbourne, and I have raised beds, prepared with good potting mix.
12 Jul 14, Yuri Dreason (Australia - cool/mountain climate)
Seeds are a lot of trouble. We grow perennial (aka multiplier) leeks. Much easier for novice gardener. They do not produce viable seed, they grow many babies off their base instead.
13 May 14, Travis Edwards (Australia - temperate climate)
I grow lots of leeks not far from Melbourne. the only time I have had a failure is when I used a cheap seed raising mix. I recommend a good quality seed raising mix and buy good quality seeds. I grow musselburgh, lyon prize taker and carentan 2 with great success. I find seeds which are fresher have a greater success rate and after a couple of years they may drop to around 50% but you still get some growing. In a 24 cell tray plant approx 4 seeds per cell, you will find most will grow but leeks do not mind some root disturbance when transplanting, just tease them apart and plant them in a hole about 30 mm diameter and 150 mm deep. When planting them in your seed trays plant the seed approx 10 mm deep and keep moist not saturated but do not let them dry out.
25 Jan 14, Ann (Australia - cool/mountain climate)
How do I save seed from my leeks. They are in full flower now (end of January) and I would like to have the next lot planted in the autumn. Thanks, Ballarat
25 Jan 14, Paul (Australia - arid climate)
Depending on whether the stem is dry or not. If dry pinch off the head and scrunch seeds into a paper bag. If still green but seed head is fully formed and there are no longer any hover flys or bees still pollinating place a knee high stocking over it and peg closed to save any dry seed that may shake out. Then when stem is dry do the scrunch thing into a paper bag. Store all seed in a cool dry place.
Showing 21 - 30 of 92 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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