Amaranth

Amaranthus caudatus

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verifiedReviewed by the GreenScout Team

Amaranth is a striking annual with long, drooping plumes of tiny flowers in deep red, purple, pink, or green that add dramatic height and texture to gardens. It is heat-loving, fast-growing, and produces abundant foliage. Both flowers and leaves are ornamental, and some varieties are edible.

Common Problems

Select the problem your Amaranth is experiencing to get a treatment guide.

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Wiltingchevron_right

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Overwateringchevron_right

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Slow Growthchevron_right

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Pale Leaveschevron_right

Care Guide

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Light

Full sun; needs 6–8 hours of direct sunlight for vigorous growth

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Water

Water regularly during establishment; moderate watering during growing season. Tolerates some drought

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Soil

Well-draining soil; tolerates poor to average fertility but prefers soil enriched with compost

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Fertiliser

Feed monthly with balanced fertilizer; excessive nitrogen promotes foliage over flowers

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Temperature

Heat-loving; thrives in warm temperatures 70–90°F (21–32°C); sensitive to cold

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Humidity

Tolerates average to dry humidity; good air circulation reduces disease risk

Toxicity

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Non-toxic to humans and pets; leaves and grains are edible in many varieties

Common Diseases

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Common Pests

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Seasonal Care

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Resume regular watering and feeding as growth picks up.

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Peak growing season. Water and feed regularly.

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Reduce watering as growth slows. Stop heavy feeding.

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Minimal watering and feeding. Protect from frost if needed.

Frequently Asked Questions

Can I eat my ornamental Amaranth?

Some varieties are edible — both the flowers and leaves are ornamental, and certain cultivars produce edible grain and greens, though not every variety grown for its dramatic plumes is meant for the table.

Why does my Amaranth grow so fast in summer heat?

It's a heat-loving annual that thrives in warm temperatures of 70–90°F — the hotter conditions actually accelerate its rapid growth and abundant foliage production.