Also known as African-Spinach · Amaranth · Blood Amaranth
Red amaranth (Amaranthus cruentus) is a vibrant annual with striking crimson flower spikes and edible leaves and seeds, thriving in warm climates.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun
100% intensity
Prefers at least 6-8 hours of direct sunlight per day for optimal growth and flowering.
Moderate
50% intensity
Keep soil consistently moist, but not waterlogged. Allow top inch to dry slightly between waterings.
Well-drained
50% intensity
Warm
75% intensity
Thrives in temperatures between 18-30°C. Protect from frost; it is sensitive to cold.
Moderate to High
75% intensity
Benefits from regular feeding during the growing season with a balanced fertilizer.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | Yes |
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Amaranthus cruentus prefers consistently moist soil but can tolerate brief dry spells. Water deeply when the top 2-3 cm of soil feels dry. Avoid waterlogged conditions, which can lead to root rot.
Reduce watering slightly during cooler periods or if humidity is high.
Pinch back young plants to encourage bushier growth. For edible varieties, harvest leaves regularly by picking the youngest ones.
For ornamental types, deadhead spent flower stalks to promote continuous blooming and prevent excessive self-seeding. Remove any yellowing or diseased foliage promptly.
Amaranthus cruentus is easily grown from seed. Sow seeds directly outdoors after the last frost, or start them indoors 4-6 weeks prior. Seeds germinate quickly in warm, moist soil.
Thin seedlings to the recommended spacing once they are established.
Repotting is generally not required for Amaranthus cruentus, as it is often grown as an annual. If grown in containers and it becomes root-bound, transplant to a slightly larger pot in spring.
Ensure good drainage in the new container to prevent root issues.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Red Amaranth (Amaranthus cruentus)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Caryophyllales |
| Family | Amaranthaceae |
| Genus | Amaranthus |
| Species | Amaranthus cruentus |
Similar in genus Amaranthus
Answers based on plant encyclopedia data
