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Can You Grow Sunflower in Oregon?

US · USDA Zone 8b · zones 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b

Grows well here

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

Plant zones

2a–11b

Oregon last frost

late January

Oregon first frost

mid-December

Days to harvest

60–80 days

When to plant Sunflowers in Oregon

Direct sow

Jan 30

Harvest

Mar 31 – Apr 20

Dates are approximate, based on Oregon'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 Oregon

Oregon has dramatically different climates west and east of the Cascades. The Willamette Valley is mild and productive year-round (Zone 8a-8b); eastern Oregon is semi-arid and colder (Zone 5-6).