How to Grow African Spinach
Wikimedia Commons
African Spinach
Amaranthus cruentus
vegetableAfrican Spinach, also known as Green Amaranth, is a fast-growing leafy vegetable native to Africa with tender, nutrient-dense leaves that can be harvested continuously. It thrives in warm climates and produces both edible leaves and ornamental seed heads. This heat-loving plant is drought-tolerant and highly productive, making it ideal for home and market gardens in tropical and subtropical regions.
Looking for a specific variety?
When should you plant African Spinach in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example African Spinach timeline · Pittsburgh, PA (Zone 6b)
-
Plant African Spinach
Around Apr 17Near Pittsburgh's average last spring frost.
-
Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
-
Harvest African Spinach
Around May 17≈ 30 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact African Spinach dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 9b-11; grows as annual in cooler zones
Sign up free to see if African Spinach grows in your zone — and get a personalized planting timeline.
Get my African Spinach timeline →Growth Stages
Germination & Seedling
2-3 weeksTiny seeds sprout within 5-10 days in warm soil. First true leaves emerge as delicate, narrow leaflets.
Keep soil warm (70-85°F) and consistently moist. Thin seedlings to proper spacing early to prevent crowding. Provide bright light once sprouted.
Vegetative Growth
3-4 weeksPlant develops multiple stems and broader, tender leaves with red or purple veining. Rapid growth phase with increasingly robust foliage.
Begin harvesting outer leaves once plant has 6-8 leaves. Regular harvesting encourages bushier growth. Feed with balanced fertilizer every 2-3 weeks.
Continuous Harvest Phase
4-8 weeksPlant reaches 12-24 inches tall with abundant harvestable leaves. Remains productive with regular leaf removal.
Pinch off flower buds if leafy greens are the primary goal. Keep well-watered and fertilized. Harvest outer leaves regularly without removing the growing tip.
Flowering & Seed Head Formation
2-4 weeksTerminal spikes with densely packed flowers appear, ranging from deep red to purple. Seeds develop in compact, cylindrical heads.
If prioritizing grain/seeds, allow flowering to continue. For leaves only, remove flower buds promptly. Flowers are edible and nutritious.
Seed Maturation & Harvest
2-3 weeksSeed heads become dry and turn papery. Seeds can be easily rubbed from the head when fully mature.
Allow seed heads to fully mature and dry on the plant before harvesting. Cut dried heads and store in a cool, dry place. Seeds remain viable for 2-3 years.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
-
Spray with insecticidal soap or neem oil; encourage natural predators like ladybugs
-
Increase humidity, spray with water, use neem oil if infestation is severe
-
Hand-pick or use Bacillus thuringiensis (Bt) for organic control
-
Yellow sticky traps, insecticidal soap, neem oil, or reflective mulch
-
Row covers on young plants, neem oil, hand-picking
Uses
Nutritious Leafy Greens
CulinaryYoung leaves are cooked like spinach in stir-fries, soups, and stews, or eaten raw in salads when very tender. Leaves contain high levels of vitamins A, C, and iron, making them a staple in African, Caribbean, and Asian cuisines. [source]
Grain Production
CulinaryThe nutrient-dense seeds can be cooked as porridge, popped like popcorn, ground into flour, or sprouted. Seeds are naturally gluten-free and rich in complete proteins. [source]
Traditional Medicine & Nutrition
MedicinalUsed in traditional African and Asian medicine to support blood health, reduce inflammation, and boost immunity. High in polyphenols and antioxidants. [source]
Natural Dyes
HouseholdDeep red and purple varieties can produce natural dyes for textiles and crafts, with the pigment derived from betalains and other anthocyanins. [source]
Wildlife & Pollinator Support
WildlifeFlowers attract bees, butterflies, and other pollinators. Seeds provide food for birds and small mammals in autumn 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
Begin harvesting leaves when plant has 6-8 true leaves (30-40 days). Pinch off the top 2-3 inches of stems with leaves, leaving lower leaves to continue growth. Harvest regularly every 7-10 days to encourage bushiness and prevent flowering. Morning harvest yields crispest leaves. Tender young leaves are best; older leaves may become slightly bitter. For seed harvest, wait until seed heads are completely dry and papery, then cut and rub out seeds.
Fun Facts
- 🌱 African Spinach was cultivated as early as 8000 BCE in Africa and remains a dietary staple across the continent, earning it the nickname 'the grain of Africa.'
- 🌱 Amaranth seeds are naturally gluten-free and contain all nine essential amino acids, making them a rare complete plant-based protein source comparable to quinoa.
- 🌱 The deep red and purple pigments in some varieties (betalains) are the same compounds found in beets and are being studied for anti-cancer and anti-inflammatory properties.
Join 30,000 gardeners planning their gardens with LizPlants.
Get your personalized African Spinach planting timeline
Tell us your zip code and we'll calculate exactly when to start African Spinach seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.
Get my African Spinach timeline →