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When to plant sunflowers

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Sunflowers planting guide

Direct sow after the last frost.

Frost-tender (warm-season) crop: protect from frost. Typical days to maturity: 80.

Sunflowers planting dates by zone

ZoneStart indoorsDirect sow
Zone 3–May 27 – Jun 17
Zone 4–May 17 – Jun 7
Zone 5–May 7 – May 28
Zone 6–Apr 27 – May 18
Zone 7–Apr 17 – May 8
Zone 8–Apr 1 – Apr 22
Zone 9–Mar 4 – Mar 25
Zone 10–Feb 7 – Feb 28

Based on average frost dates for each zone in 2027; check your local frost date.

FAQ

When should I plant sunflowers?

Direct sow after the last frost.

How long do sunflowers take to grow?

About 80 days to first harvest for typical varieties.

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