Leek

Leeks in Uwchmynydd

Allium ampeloprasum var. porrum

A hardy allium for the UK garden, best started under cover and planted out into firm, fertile soil. Keep the rows weed-free, water well in dry spells, and lift stems as you need them from autumn through winter and into spring.

Height45cm
SunlightFull Sun
WaterModerate Water

Growing Guide

Step-by-step instructions for growing Leek

Planting Calendar

Seed IndoorLater
J
F
M
A
M
J
J
A
S
O
N
D
TransplantLater
J
F
M
A
M
J
J
A
S
O
N
D
HarvestLater
J
F
M
A
M
J
J
A
S
O
N
D
MaintenanceNow
J
F
M
A
M
J
J
A
S
O
N
D
  1. Prepare the Bed

    16 Jan – 31 Jan

    Dig the bed well and work in compost before planting time. Leeks do best in moisture-retentive but free-draining soil, and a loose, stone-free tilth helps the stems grow straight around 16th January - 31st January.

  2. Sow Seeds Under Cover

    2 Dec – 31 Jan

    Sow seeds thinly in modules or a seed tray around 2nd December - 31st January, about deep. Keep them at and water gently so the compost stays moist but not sodden.

  3. Prick Out Seedlings

    22 Jan – 5 Feb

    Move seedlings on when they are large enough to handle, from 22nd January. Pot them into small modules or deeper trays so the roots can develop without crowding.

  4. Harden Off

    16 Feb – 2 Mar

    Set plants outside for a few hours a day before planting out. Do this over 16th February - 2nd March so they adjust to wind, sun and cooler nights without checking growth.

  5. Plant Out

    16 Feb – 1 Apr

    Plant sturdy seedlings into deep dibbed holes around 16th February - 1st April, leaving just the base of the leaves at soil level. Water in thoroughly at once, then let the soil settle naturally around the roots rather than firming hard.

  6. Weed and Earth Up

    10 Mar – 26 Nov

    Keep the rows weed-free and draw soil up around the stems as they thicken. Start from 10th March and repeat as the plants grow, keeping moisture steady in dry spells so the stems stay tender and pale.

  7. Harvest Leeks

    7 Aug – 26 Mar

    Lift leeks from 7th August once the stems are a usable size, then keep picking through 26th March. Use a fork to loosen the soil before pulling, and take what you need rather than clearing the bed at once.

Companion Plants

Tap a plant to see why it works (or doesn't) with Leek.

Good companions

Plants to avoid

Why companion planting matters

Companion planting can deter pests, improve pollination, and make better use of space. Some plants confuse pests or attract beneficial insects; others improve soil or offer shade to neighbours that need it.

Suggested Varieties

Popular varieties of Leek to consider

Musselburgh

A reliable open-pollinated leek with long, sturdy stems and good winter hardiness.

Lyon

A traditional variety that gives long white shanks and dependable flavour.

Bandit

A hardy winter leek that stands well and crops for a long period.

Below Zero

A very cold-tolerant leek suited to late cropping and winter harvests.

Also in nearby towns

See how Leek timing shifts in other towns with different frost dates.