Leek
cool-season crop
At a glance
| Suitable zone groups | All four zone groups (3-4, 5-6, 7-8, 9-10), as a cool-season annual |
|---|---|
| Planting window | See the guide text below, in general terms relative to your last spring frost |
| Sun | Full sun |
| Soil | Rich, well-draining soil |
| Watering | Steady, regular watering |
About this plant
Leeks provide a mild onion flavor for soups and other cooked dishes. They suit all four zone groups (3-4, 5-6, 7-8, 9-10) as a cool-season annual and need full sun.
Give leeks rich, well-draining soil with steady, regular watering. Keep weeds from competing with the narrow leaves, and clean harvested stems carefully because soil can collect between their layers.
Common beginner failures and fixes
- Stems stay thin in a weedy bed: Remove competing weeds gently and give plants the spacing recommended for the variety.
- Growth stalls as soil dries: Maintain steady, regular watering and check moisture around the roots.
- Plants struggle in a soggy bed: Improve drainage before planting and avoid leaving roots in standing water.
- Cooked leeks contain grit: Split harvested stems lengthwise and rinse between the layers before cooking.
Beginner checklist
- Grow leeks as a cool-season annual in your zone group.
- Choose a full-sun location.
- Prepare rich, well-draining soil.
- Provide steady, regular watering.
- Weed gently around the plants.
Zone groups and planting windows here are general guidance. Confirm your own zone and last frost date locally before planting.