Can You Grow Collard Greens in Zone 9b?
Quick Answer:
✅ Yes — Collards are well-suited to your zone — they handle summer heat and frost alike.
✅ Yes
Collard Greens grows well in Zone 9b
Collards are well-suited to your zone — they handle summer heat and frost alike.
📅 When to Plant in Zone 9b
Start Indoors
Jan 1
Transplant Out
Jan 10
Last Sow Date
Oct 6
🌾 Harvest
Mar 11 – Mar 31
Based on Zone 9b's average last frost of mid-January and first frost of late December.
🌱 Growing Collard Greens in Zone 9b
Start indoors 4-6 weeks before last frost or direct sow. Harvest lower leaves as needed. Plants withstand hard frosts — flavor improves after cold snaps. In warm zones, grow as a fall/winter crop.
🪴 Container: 5+ gal pot💧 Hydroponic OK❄️ Frost Tolerant
🗺️ USDA Plant Hardiness Zones
Zone 9 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 9b
- USDA Zone
- 9b
- Last Frost
- mid-January
- First Frost
- late December
- Frost-Free Days
- 348
- Collard Greens Zone Range
- 5a – 11b
- Days to Harvest
- 60–80 days
Frequently Asked Questions
Collards are well-suited to your zone — they handle summer heat and frost alike.
Zone 9b is in USDA Hardiness Zone 9b with approximately 348 frost-free days per year.
Collard Greens grows in USDA Zones 5a–11b.
Collard Greens is beginner-friendly and one of the easier crops to grow.