Plant Radishes in Zone 9b
Seed-starting, transplant & harvest dates for USDA Zone 9b
Direct sow
Jan 18
Harvest (~28d)
Feb 15
In Zone 9b, the average last spring frost is around February. Radishes is a hardy crop, so sow it directly around the dates above.
Last spring frost
Feb 15
First fall frost
Dec 10
Growing season
298 days
Full Radishes grow guide → · All crops for Zone 9b →
Frequently asked questions
When should I start radishes in Zone 9b?
Direct sow outdoors around Jan 18.
Can I direct sow radishes in Zone 9b?
Yes, direct sow around Jan 18.