Plant Sunflowers in Zone 7b
Seed-starting, transplant & harvest dates for USDA Zone 7b
Direct sow
Apr 10
Harvest (~80d)
Jun 29
In Zone 7b, the average last spring frost is around April. Sunflowers is a half-hardy crop, so sow it directly around the dates above.
Last spring frost
Apr 3
First fall frost
Nov 1
Growing season
212 days
Full Sunflowers grow guide → · All crops for Zone 7b →
Frequently asked questions
When should I start sunflowers in Zone 7b?
Direct sow outdoors around Apr 10.
Can I direct sow sunflowers in Zone 7b?
Yes, direct sow around Apr 10.