How to Grow Amaranth

Amaranth

Amaranthus species

vegetable

Amaranth is a highly nutritious warm-season crop grown for both its edible leaves (similar to spinach) and grain-like seeds. With vibrant foliage in shades of green, red, or purple, it's both productive and ornamentally striking. This ancient grain is drought-tolerant and thrives in hot climates.

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Growing Conditions

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Sun: Full sun, 6-8 hours daily minimum; more sun increases yields

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Water: Moderate watering; drought-tolerant once established. Keep soil consistently moist during seedling stage. Reduce water frequency as plant matures. Overwatering can reduce grain quality.

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Spacing: 6-12 inches apart depending on variety and use (closer for leaf harvest, wider for grain) inches

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Days to maturity: 50-70 days for leaf harvesting; 90-120 days for grain maturity

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Planting depth: 0.25-0.5 inches deep

Soil

Type: Well-draining loamy or sandy soil

pH: 6.0-7.5

Amendments:

Compost aged manure balanced fertilizer for grain production

Growing Zones

Find your zone →

Thrives in zones 3-11; best in warm zones 6-10

2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b

Growth Stages

Seedling

2-3 weeks

Tiny plants with first true leaves emerging, very delicate appearance

Keep soil consistently moist but not waterlogged. Thin seedlings to proper spacing once 2-3 inches tall. Protect from strong wind.

Vegetative Growth

3-4 weeks

Rapid stem and leaf expansion; plant reaches 12-24 inches with large colorful foliage

Begin harvesting outer leaves if growing for greens. Reduce watering frequency. Apply balanced fertilizer mid-season for robust growth.

Flowering/Panicle Development

2-3 weeks

Distinctive flower heads (panicles) form at top and sides; ranges from dense spikes to feathery plumes in red, gold, or purple

Reduce nitrogen fertilizer to encourage grain development. Continue minimal watering. Do not harvest leaves aggressively at this stage.

Grain Maturation

3-4 weeks

Panicles dry out and harden; seeds develop dark color (tan, red, or black depending on variety) and become hard

Cease watering to promote drying. Monitor for seed shattering. Leaves may yellow and drop naturally.

Harvest Ready

Variable; lasts until harvest

Panicles fully dried and brown; seeds release easily when rubbed; plant becomes brittle

Harvest entire panicles before excessive shattering. Cut stems at base for complete harvest. Dry further indoors for 1-2 weeks.

Companion Planting

Plan your garden →

Plant with:

Basil Melons Squash Corn Lettuce Spinach Peas Beans

Avoid planting near:

Fennel Brassicas (if heavy shade cast over them)

Common Pests

Use floating row covers on young plants; neem oil spray; diatomaceous earth on foliage
Increase humidity with regular misting; strong water spray to dislodge; neem oil if severe
Hand-pick visible larvae; Bt (Bacillus thuringiensis) spray; row covers in early season
Yellow sticky traps; floating row covers; spinosad if heavy infestation
Improve air circulation; sulfur dust or neem oil spray; remove infected leaves

Uses

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Nutrient-Dense Grain Substitute

Culinary

Amaranth seeds are a complete protein containing all nine essential amino acids, making them an excellent grain alternative for cooking, popping like popcorn, or grinding into flour for baking. [source]

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Leafy Green Vegetable

Culinary

Young tender amaranth leaves are edible when cooked like spinach or eaten raw in salads. They are high in vitamins A, C, and minerals including iron and calcium. [source]

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Traditional Medicinal Uses

Medicinal

In traditional medicine systems, amaranth leaves and seeds have been used to address anemia, inflammation, and digestive issues due to their high nutritional density. [source]

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Natural Dye Production

Household

Red and purple amaranth varieties produce vibrant natural dyes that can be extracted from leaves and stems for textile or craft dyeing projects. [source]

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Seed Source for Birds

Wildlife

Leaving mature amaranth plants unharvested provides an excellent natural food source for songbirds and other wildlife throughout fall and winter. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

For greens: harvest outer leaves once plant reaches 12 inches, pinching from bottom up, allowing center to continue growing (similar to kale). For grain: wait until panicles are completely dry and brown, then cut entire flower head. Lay on clean cloth indoors to finish drying (1-2 weeks), then thresh by rubbing panicles between hands to release seeds. Store dried grain in airtight containers.

Fun Facts

🌱 Amaranth was a staple crop of the Aztecs and Incas, valued for both nutrition and ceremonial importance; it's been cultivated for over 8,000 years.
🌱 A single amaranth plant can produce 40,000 to 60,000 seeds, making it incredibly prolific and why ancient civilizations relied on it as a drought-resistant food security crop.
🌱 Amaranth can grow in poor soil conditions and is remarkably heat and drought-tolerant, making it an ideal crop for climate adaptation and food security in challenging environments.

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