Can You Grow Amaranth (Chaulai / Rajgira) in Zone 4b?
Amaranth (Chaulai / Rajgira) grows well in Zone 4b
Amaranth thrives in your zone — a productive dual-purpose crop for greens and nutritious grain.
📅 When to Plant in Zone 4b
Based on Zone 4b's average last frost of mid-April and first frost of mid-October.
🌱 Growing Amaranth (Chaulai / Rajgira) in Zone 4b
Direct sow after last frost — grows rapidly in heat. Harvest outer leaves continuously for greens. For grain, let seed heads mature and turn brown, then thresh over a bucket. Leaf amaranth is ready in 6-8 weeks. Self-seeds prolifically — deadhead if you do not want volunteers.
🗺️ USDA Plant Hardiness Zones
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
- Amaranth (Chaulai / Rajgira) Zone Range
- 4a – 11b
- Days to Harvest
- 50–75 days