Can You Grow Onion in Zone 13b?
Quick Answer:
❌ No — Onions struggle in very short-season zones but can still produce green onions for harvest.
❌ No
Onion won't survive Zone 13b winters outdoors
Onions struggle in very short-season zones but can still produce green onions for harvest.
🗺️ USDA Plant Hardiness Zones
Zone 13 is shown in
this colour
on the map below
2023 USDA Plant Hardiness Zone Map — public domain. USDA Agricultural Research Service
USDA zones run 1a–13b (26 half-zones). Each full zone above covers both the a and b half-zones. Browse all US zones →
Technical climate details for Zone 13b
- USDA Zone
- 13b
- Last Frost
- no frost
- First Frost
- no frost
- Frost-Free Days
- 365
- Onion Zone Range
- 2a – 9b
- Days to Harvest
- 90–120 days
Frequently Asked Questions
Onions struggle in very short-season zones but can still produce green onions for harvest.
Zone 13b is in USDA Hardiness Zone 13b with approximately 365 frost-free days per year.
Onion grows in USDA Zones 2a–9b.
Onion needs moderate care and attention to thrive.