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Can You Grow Leek in Missouri?

US · USDA Zone 6a · zones 5a, 5b, 6a, 6b

Grows well here

Leeks grow well here — cold-hardy and can be harvested into late autumn.

Plant zones

3a–9b

Missouri last frost

early April

Missouri first frost

late October

Days to harvest

100–150 days

When to plant Leeks in Missouri

Start indoors

Jan 6

Transplant

Apr 1

Harvest

Jul 10 – Aug 29

Dates are approximate, based on Missouri's average frost dates. Your exact yard may vary by microclimate.

About Leek

Leeks are cold-hardy slow-growing vegetables that can be harvested well into autumn and even winter.

Start indoors in late winter — leeks need a very long season. Transplant deeply to blanch stems. Harvest after first frosts — cold improves flavour. Very cold-hardy surviving to -10°C.

Full leek growing guide →

Gardening in Missouri

Missouri has a humid continental climate. Kansas City and St. Louis are Zone 6a-6b; northern Missouri is cooler at Zone 5b-6a. Four distinct seasons with a long growing window.