Can You Grow Radish in Canadian Zone 4?
Radish grows well in Canadian Zone 4
Radishes grow in almost any zone — they are one of the fastest and easiest crops you can grow.
📅 When to Plant in Canadian Zone 4
Based on Canadian Zone 4's average last frost of early May and first frost of early October — frost can arrive earlier or later in any given year, so check your local forecast before you transplant.
🌱 Growing Radish in Canadian Zone 4
Direct sow in early spring or late summer. Succession plant every 2 weeks for continuous harvest. Pull before they get woody. Great as a companion plant to mark slow-germinating rows.
🗺️ 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 4
- USDA Zone
- 4
- Last Frost
- early May
- First Frost
- early October
- Frost-Free Days
- 152
- Radish Zone Range
- 2a – 9b
- Days to Harvest
- 22–30 days