Leek Growing Guide

Allium porrum

Crop Rotation Group

Allium (Onion family) ●

Soil

Requires rich, loamy soil that holds moisture well.

Position

Sun or partial shade.

Frost tolerant

Yes.

Feeding

In late summer while the weather is still warm, drench plants thoroughly with a water-soluble plant food.

Spacing

Single Plants: 20cm (7") each way (minimum)
Rows: 15cm (5") with 30cm (11") row gap (minimum)

Sow and Plant

In frost areas sow early spring under cover. Plant out in late spring. In frost free areas, sow directly or transplant into weed-free ground in late spring.
Our Garden Planner can produce a personalized calendar of when to sow, plant and harvest for your area.

Notes

When leeks are almost the size you prefer, blanch them for 2 to 3 weeks by putting a mound of soil, mulch, or a cardboard tube around the base of each stem. Grows best in climates where nights remain cool through summer.

Harvesting

Can be left in the ground until required and harvested right through autumn, winter and early spring.

Planting and Harvesting Calendar

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Pests which Affect Leek

Aphids (General)

Slug

Snail

Plant Diseases which Affect Leek

Allium White Rot

Onion Downy Mildew