How to Grow Quadricolor Amaranth
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Quadricolor Amaranth
Amaranthus hypochondriacus × Amaranthus cruentus
vegetableQuadricolor amaranth is an ornamental and edible leafy green featuring striking foliage with red, yellow, orange, and green coloration on the same plant. The vibrant leaves are highly nutritious and can be harvested young for salads or cooked like spinach. This heat-loving annual grows quickly and produces dramatic visual interest in both garden beds and containers.
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Example Quadricolor Amaranth timeline · Pittsburgh, PA (Zone 6b)
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Plant Quadricolor Amaranth
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 Quadricolor Amaranth
Around Jun 1≈ 45 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Quadricolor Amaranth dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 5-10; performs best in warm climates and can be grown as an annual throughout most of North America
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Get my Quadricolor Amaranth timeline →Growth Stages
Seedling
2-3 weeksTiny plants with 2-4 leaves; very delicate with thin stems and emerging true leaves beginning to show color variations
Keep soil evenly moist; provide bright light; thin seedlings to proper spacing once they have 3-4 true leaves. Avoid overwatering which causes damping off.
Vegetative Growth
3-4 weeksPlants develop 8-15 leaves with increasingly visible multicolored foliage; stems thicken and branching begins; red, yellow, orange, and green colors become more pronounced
Water regularly and deeply; apply balanced fertilizer every 2-3 weeks; remove any damaged leaves; ensure good air circulation. This is the ideal stage for harvesting tender greens.
Leaf Development & Harvesting Window
3-4 weeksPlant reaches 12-24 inches tall with fully developed multicolored leaves at peak color intensity; dense foliage throughout the plant
Begin harvesting outer leaves regularly to encourage bushiness and continued production; this harvesting also directs energy into more leaf growth. Water consistently; watch for pests.
Flowering & Seed Production
Ongoing as temperatures remain warmPlant may eventually produce tall flower spikes with tiny red or purple flowers; if allowed to mature, ornamental seed heads develop
Pinch off flower spikes if continuing leaf harvest is desired, as flowering redirects energy from leaves. Allow some to flower for ornamental value and seed saving if desired.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with strong water stream; use insecticidal soap; introduce ladybugs or lacewings; neem oil as a last resort
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Handpick small infestations; use floating row covers on young plants; spinosad or neem oil for heavy infestations
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Increase humidity and water spray; isolate heavily infested plants; use miticide or neem oil if needed
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and
Remove by hand, especially at dusk; use beer traps; apply copper tape; encourage ground beetles and other predators
Uses
Nutritious Leafy Green
CulinaryQuadricolor amaranth leaves are edible raw or cooked, offering a mild, slightly earthy flavor with excellent nutritional content including protein, calcium, iron, and vitamins A and C. Young tender leaves work perfectly in fresh salads, while mature leaves are ideal for sautéing like spinach. [source]
Seeds for Grains
CulinaryIf allowed to mature, Quadricolor amaranth produces edible seeds that can be harvested, dried, and used as a nutritious pseudocereal. The seeds can be popped like popcorn or ground into flour for baking. [source]
Garden Display & Landscape Color
OrnamentalThe striking four-color foliage makes Quadricolor amaranth an exceptional ornamental accent plant for beds, borders, and containers. The multicolored leaves intensify in heat and bright sunlight, creating vibrant visual interest from midsummer through frost. [source]
Traditional Herbal Uses
MedicinalAmaranth leaves have been used in traditional medicine systems to support digestive health and reduce inflammation. The plant contains polyphenols and other bioactive compounds with antioxidant potential. [source]
Cut Flowers & Floral Arrangements
HouseholdThe mature flower spikes and colored foliage are excellent in fresh or dried flower arrangements, adding long-lasting color and texture to bouquets and decorative displays. [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 when plants are 6-8 inches tall by pinching off outer leaves and tender growing tips; this encourages bushier growth and more leaves. For best flavor and tenderness, harvest in the morning after dew dries. Tender young leaves (45-60 days) are excellent for fresh salads; older leaves (70+ days) are better cooked. Continue harvesting throughout the season as new leaves emerge. If growing for ornamental purposes, allow the plant to mature fully.
Fun Facts
- 🌱 Quadricolor amaranth changes color intensity in response to temperature and light—the hotter and brighter the conditions, the more vibrant the red and orange hues become.
- 🌱 Amaranth was a staple crop of the Aztecs and has been cultivated for over 8,000 years; it's considered a superfood in many cultures due to its exceptional nutritional density.
- 🌱 This plant produces prolific self-seeding; if you allow one plant to flower and set seed, you may find volunteer plants appearing in your garden the following season.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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