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Can You Grow Sunflower in Indiana?

US · USDA Zone 5b · zones 5a, 5b, 6a

Grows well here

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

Plant zones

2a–11b

Indiana last frost

early April

Indiana first frost

late October

Days to harvest

60–80 days

When to plant Sunflowers in Indiana

Direct sow

Apr 7

Harvest

Jun 6 – Jun 26

Dates are approximate, based on Indiana'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 Indiana

Indiana has a humid continental climate. Northern Indiana is Zone 5a-5b; southern Indiana is warmer at Zone 6a. Four distinct seasons with a 5-6 month growing window.