Plant Sunflowers in Zone 8a
Seed-starting, transplant & harvest dates for USDA Zone 8a
Direct sow
Apr 1
Harvest (~80d)
Jun 20
In Zone 8a, the average last spring frost is around March. Sunflowers is a half-hardy crop, so sow it directly around the dates above.
Last spring frost
Mar 25
First fall frost
Nov 8
Growing season
228 days
Full Sunflowers grow guide → · All crops for Zone 8a →
Frequently asked questions
When should I start sunflowers in Zone 8a?
Direct sow outdoors around Apr 1.
Can I direct sow sunflowers in Zone 8a?
Yes, direct sow around Apr 1.