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Can You Grow Sunflower in Hawaii?
US · USDA Zone 12b · zones 9b, 10a, 10b, 11a, 11b, 12a, 12b
Sunflowers grow in virtually any zone with a few weeks of warm weather.
Plant zones
Hawaii last frost
Hawaii first frost
Days to harvest
When to plant Sunflowers in Hawaii
Direct sow
Harvest
Dates are approximate, based on Hawaii'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.
Gardening in Hawaii
Hawaii is tropical with year-round warmth. Zone varies dramatically by elevation — coastal areas are Zone 11-12 while Mauna Kea slopes reach Zone 9. Year-round growing throughout.
Frequently asked questions
Can you grow Sunflower in Hawaii?
Sunflowers grow in virtually any zone with a few weeks of warm weather.
What zone is Hawaii?
Hawaii spans USDA Zone 12b (9b, 10a, 10b, 11a, 11b, 12a, 12b).
When do you plant Sunflowers in Hawaii?
Plant Sunflowers Jan 1, harvest Mar 2 – Mar 22.