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Can You Grow Amaranth (Chaulai / Rajgira) in Zone 10b?

Zone 10b 345 frost-free days🌱 Beginner Friendly
Quick Answer: ✅ Yes — Amaranth thrives in your zone — a productive dual-purpose crop for greens and nutritious grain.
✅ Yes

Amaranth (Chaulai / Rajgira) grows well in Zone 10b

Amaranth thrives in your zone — a productive dual-purpose crop for greens and nutritious grain.

📅 When to Plant in Zone 10b

Start Indoors Jan 1
Transplant Out Jan 1
Last Sow Date Oct 17
🌾 Harvest Feb 20 – Mar 17

Based on Zone 10b's average last frost of virtually frost-free and first frost of virtually frost-free.

🌱 Growing Amaranth (Chaulai / Rajgira) in Zone 10b

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.

🪴 Container: 5+ gal pot🏠 Indoor Viable💧 Hydroponic OK

🌿 Other Things That Grow in Zone 10b

🥑 Avocado ✅ 🍌 Banana ✅ 🌿 Basil ✅ Beginner 🌳 Bay Laurel ✅ 🫑 Bell Pepper ✅ 🥒 Bitter Melon (Karela) ✅ 💙 Borage ✅ Beginner 🥒 Bottle Gourd (Lauki / Doodhi) ✅
See all plants for Zone 10b →

📍 Where Else Can You Grow Amaranth (Chaulai / Rajgira)?

Zone 4a Zone 4b Zone 5a Zone 5b Zone 6a Zone 6b

🗺️ USDA Plant Hardiness Zones

Zone 10 is shown in this colour on the map below
2023 USDA Plant Hardiness Zone Map — zones 1 to 13

2023 USDA Plant Hardiness Zone Map — public domain. USDA Agricultural Research Service

1 2 3 4 5 6 7 8 9 10 11 12 13

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 10b
USDA Zone
10b
Last Frost
virtually frost-free
First Frost
virtually frost-free
Frost-Free Days
345
Amaranth (Chaulai / Rajgira) Zone Range
4a – 11b
Days to Harvest
50–75 days

Frequently Asked Questions

Amaranth thrives in your zone — a productive dual-purpose crop for greens and nutritious grain.
Zone 10b is in USDA Hardiness Zone 10b with approximately 345 frost-free days per year.
Amaranth (Chaulai / Rajgira) grows in USDA Zones 4a–11b.
Amaranth (Chaulai / Rajgira) is beginner-friendly and one of the easier crops to grow.