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Can You Grow Amaranth (Chaulai / Rajgira) in Hawaii?

US · USDA Zone 12b · zones 9b, 10a, 10b, 11a, 11b, 12a, 12b

Grow indoors

Start indoors and give it a warm sheltered spot — it produces quickly once heat arrives.

Plant zones

4a–11b

Hawaii last frost

no frost

Hawaii first frost

no frost

Days to harvest

50–75 days

When to plant Amaranth (Chaulai / Rajgira)s in Hawaii

Start indoors

Jan 1

Transplant

Jan 1

Harvest

Feb 20 – Mar 17

Dates are approximate, based on Hawaii's average frost dates. Your exact yard may vary by microclimate.

About Amaranth (Chaulai / Rajgira)

Amaranth (chaulai saag) is a fast-growing leafy vegetable and grain crop used across Indian, African, and Central American cuisines. The leaves are cooked like spinach; the seeds (rajgira) are a nutritious grain used in laddoos and rotis. Extremely productive and heat-tolerant.

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.

Full amaranth (chaulai / rajgira) growing guide →

Gardening in Hawaii

Hawaii is tropical with year-round warmth. Zone varies dramatically by elevation — coastal areas are Zone 11-12 while Mauna Kea slopes reach Zone 9. Year-round growing throughout.