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Can You Grow Sunflower in Missouri?

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

Grows well here

Sunflowers grow brilliantly here — they love the warm season and produce quickly.

Plant zones

2a–11b

Missouri last frost

early April

Missouri first frost

late October

Days to harvest

60–80 days

When to plant Sunflowers in Missouri

Direct sow

Apr 1

Harvest

May 31 – Jun 20

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

About Sunflower

Sunflowers are fast-growing cheerful and attract pollinators — some varieties produce edible seeds.

Direct sow after last frost in the sunniest spot available. No transplanting needed. Giant varieties need staking. Harvest seed heads when the back turns brown and seeds are firm.

Full sunflower 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.