Can You Grow Radish in Zone 4b?
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 Zone 4b
Radishes grow in almost any zone — they are one of the fastest and easiest crops you can grow.
📅 When to Plant in Zone 4b
Direct Sow
Apr 15
Last Sow Date
Sep 15
🌾 Harvest
May 7 – May 15
Based on Zone 4b's average last frost of mid-April and first frost of mid-October.
🌱 Growing Radish in Zone 4b
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
🗺️ USDA Plant Hardiness Zones
Zone 4 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 4b
- USDA Zone
- 4b
- Last Frost
- mid-April
- First Frost
- mid-October
- Frost-Free Days
- 183
- 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.
Zone 4b is in USDA Hardiness Zone 4b with approximately 183 frost-free days per year.
Radish grows in USDA Zones 2a–9b.
Radish is beginner-friendly and one of the easier crops to grow.