How to Grow Tricolor (Amaranthus)
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Tricolor (Amaranthus)
Amaranthus tricolor
vegetableTricolor amaranth is a stunning leafy green vegetable with vibrant red, yellow, and green variegated foliage that is as ornamental as it is edible. The tender leaves and young shoots are nutrient-dense and commonly used in Asian cuisines, particularly Chinese and Indian cooking. This heat-loving annual grows rapidly and can reach 2-4 feet tall depending on variety and growing conditions.
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Example Tricolor (Amaranthus) timeline · Pittsburgh, PA (Zone 6b)
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Plant Tricolor (Amaranthus)
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Tricolor (Amaranthus)
Around May 27≈ 40 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-11; best grown in zones 6-10 as an annual, or zones 11+ as a perennial
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Get my Tricolor (Amaranthus) timeline →Growth Stages
Seedling
10-14 daysTiny plants with 2-4 true leaves, still displaying early color variations. Cotyledons are simple; true leaves begin showing tricolor patterns.
Keep soil moist but not soggy. Provide bright light to prevent stretching. Thin seedlings to proper spacing when 2-3 inches tall. Start fertilizing at half-strength when true leaves appear.
Vegetative Growth
20-35 daysRapid leaf development with increasingly vibrant red, yellow, and green variegation. Plant grows 6-18 inches tall with dense foliage. Stems remain tender.
Water regularly and deeply. Apply balanced or nitrogen-rich fertilizer every 2-3 weeks to encourage leaf production. Pinch off flower spikes if you want to extend tender leaf harvest. Monitor for pests.
Pre-Flowering
10-15 daysPlant reaches near full height (2-4 feet). Leaf color intensifies dramatically. Flower spikes begin forming at the top and leaf axils.
Continue regular watering and fertilizing. For prolonged tender leaf harvest, continue pinching flower buds. If allowing flowering, reduce nitrogen slightly to encourage seed production.
Flowering
15-25 daysDistinctive upright or drooping flower spikes (panicles) appear in red, yellow, or combination colors. Flowers are tiny but create dramatic plumes. Leaves become slightly tougher.
Reduce watering slightly if seed production is desired. Allow some flowers to mature for seeds or ornamental effect. Continue harvesting young leaves below flower clusters. Flowering signals peak nutrient content in seeds.
Seed Production & Maturity
20-30 daysSeeds develop in flower spikes and mature to dark brown or black. Plant may begin to decline if not harvested. Seeds are viable and can self-sow.
Allow flower spikes to fully dry on plant if collecting seeds. Cut panicles before seeds drop naturally. Continue harvesting lower leaves. Plants typically complete life cycle by 90-120 days total.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Use row covers early; spray with neem oil or spinosad; dust with food-grade diatomaceous earth
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Spray with strong water stream; use insecticidal soap or neem oil; encourage natural predators like ladybugs
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Increase humidity; spray with water; apply neem oil or sulfur; mist regularly to prevent hot, dry conditions
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and
(Noctuidae family)
Hand-pick; use Bt (Bacillus thuringiensis); apply spinosad spray; encourage parasitic wasps
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Use yellow sticky traps; spray with insecticidal soap; apply neem oil; encourage natural predators
Uses
Leafy Green Vegetable
CulinaryTricolor amaranth leaves are tender and slightly nutty, used fresh in salads, stir-fries, soups, and curries. High in vitamins A, C, and minerals; the seeds are also edible and nutritious. [source]
Asian Cuisine
CulinaryA staple in Chinese (called 'xian cai') and South Asian cooking where it's frequently stir-fried with garlic and oil. Popular in Indian cuisine and Southeast Asian dishes. [source]
Grain & Seeds
CulinaryThe tiny seeds can be popped like popcorn, used in cereals, ground into flour, or added to salads. Ancient grain with complete amino acid profile. [source]
Nutritional Supplement
MedicinalRich in iron, calcium, magnesium, and antioxidants. Traditionally used to support blood health and boost immune function. Seeds contain squalene and phytosterols. [source]
Garden Ornament
OrnamentalThe vibrant red, yellow, and green variegated foliage and dramatic flower panicles make tricolor amaranth a stunning ornamental addition to flower beds and borders. [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 tender leaves when plants are 8-12 inches tall (30-40 days). Pinch off top 2-4 inches of stems with 4-6 leaves for repeated harvests. For microgreens, harvest at 2-3 weeks. For mature greens and grain/seeds, allow flowering and harvest dried panicles. Young leaves are most tender and best for cooking. The entire plant is edible including stems, leaves, and seeds.
Fun Facts
- 🌱 Tricolor amaranth is one of the oldest cultivated plants, with evidence of use dating back over 6,000 years in Mesoamerica and Asia, making it a true superfood of ancient civilizations.
- 🌱 The vibrant red and yellow pigments in the leaves come from betalains and other polyphenol antioxidants, the same compounds found in beets and dragon fruit.
- 🌱 Amaranth is a 'complete protein' grain containing all nine essential amino acids, making it valuable for vegetarian and vegan diets—the Aztecs valued it so highly it was used in ceremonial foods.
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