Can You Grow Mustard Greens in Canadian Zone 9?
Mustard Greens grows well in Canadian Zone 9
Mustard greens grow fast and easy in your zone — two crops per year in spring and fall.
📅 When to Plant in Canadian Zone 9
Based on Canadian Zone 9's average last frost of mid-January and first frost of mid-December — frost can arrive earlier or later in any given year, so check your local forecast before you transplant.
🌱 Growing Mustard Greens in Canadian Zone 9
Direct sow in early spring or fall — hot weather triggers bolting and extreme bitterness. Harvest outer leaves continuously. Baby leaves at 3 weeks are excellent for salads. Grows well indoors under lights.
🗺️ Canadian Plant Hardiness Zones
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 9
- USDA Zone
- 9
- Last Frost
- mid-January
- First Frost
- mid-December
- Frost-Free Days
- 334
- Mustard Greens Zone Range
- 4a – 10b
- Days to Harvest
- 30–40 days