Can You Grow Collard Greens in Canadian Zone 0?
Quick Answer:
❌ No — Collard greens struggle in zones with extreme cold — they are heat and mild-frost tolerant but not deeply cold-hardy.
❌ No
Collard Greens won't survive Canadian Zone 0 winters outdoors
Collard greens struggle in zones with extreme cold — they are heat and mild-frost tolerant but not deeply cold-hardy.
🗺️ Canadian Plant Hardiness Zones
Zone 0 is shown in
this colour
on the map below
Canadian Plant Hardiness Zone Map (2014) — Agriculture & Agri-Food Canada / Canadian Forest Service
Canadian zones run 0–9 (coldest to warmest) — a separate system from USDA zones. Browse all Canadian zones →
Technical climate details for Canadian Zone 0
- USDA Zone
- 0
- Last Frost
- early July
- First Frost
- early August
- Frost-Free Days
- 31
- Collard Greens Zone Range
- 5a – 11b
- Days to Harvest
- 60–80 days
Frequently Asked Questions
Collard greens struggle in zones with extreme cold — they are heat and mild-frost tolerant but not deeply cold-hardy.
Canadian Zone 0 is in USDA Hardiness Zone 0 with approximately 31 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.