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Can You Grow Sunflower in Oklahoma?

US · USDA Zone 7a · zones 6a, 6b, 7a, 7b

Grows well here

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

Plant zones

2a–11b

Oklahoma last frost

early March

Oklahoma first frost

late November

Days to harvest

60–80 days

When to plant Sunflowers in Oklahoma

Direct sow

Mar 7

Harvest

May 6 – May 26

Dates are approximate, based on Oklahoma'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 Oklahoma

Oklahoma ranges from Zone 6a in the Panhandle to Zone 7b in the southeast. Hot summers and mild winters. Long growing season for warm-season crops.