Can You Grow Radish in Canadian Zone 4?
Quick Answer:
✅ Yes — Radishes grow in almost any zone — they are one of the fastest and easiest crops you can grow.
✅ Yes
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
Direct Sow
May 1
Last Sow Date
Sep 1
🌾 Harvest
May 23 – May 31
Based on Canadian Zone 4's average last frost of early May and first frost of early October.
🌱 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.
🪴 Container: 3+ gal pot❄️ Frost Tolerant
🗺️ Canadian Plant Hardiness Zones
Zone 4 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 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
Frequently Asked Questions
Radishes grow in almost any zone — they are one of the fastest and easiest crops you can grow.
Canadian Zone 4 is in USDA Hardiness Zone 4 with approximately 152 frost-free days per year.
Radish grows in USDA Zones 2a–9b.
Radish is beginner-friendly and one of the easier crops to grow.