When to plant sunflowers in zone 9

Sunflowers in USDA zone 9

Average zone 9 frost dates: last spring frost ≈ Feb 25, first fall frost ≈ Dec 1 (279 frost-free days). Local dates can vary by 2-3 weeks.

Direct sow after the last frost.

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Other zones

• Sunflowers in zone 3
• Sunflowers in zone 4
• Sunflowers in zone 5
• Sunflowers in zone 6
• Sunflowers in zone 7
• Sunflowers in zone 8
• Sunflowers in zone 10
• Zone 9 planting calendar