How to Grow Purple Dasheen
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Purple Dasheen
Colocasia esculenta var. esculenta
vegetablePurple Dasheen is a tropical root vegetable with distinctive purple-tinged stems and dark foliage, prized for its edible corms (underground tubers). The plant produces large, heart-shaped leaves and can reach 3-6 feet in height. It thrives in warm, humid climates and is a staple crop in Caribbean, African, and Asian cuisines.
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Example Purple Dasheen timeline · Pittsburgh, PA (Zone 6b)
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Plant Purple Dasheen
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 Purple Dasheen
Late summer into fallBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 10-11; can be grown in zone 9 with protection. Best in warm, humid tropical and subtropical regions.
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Get my Purple Dasheen timeline →Growth Stages
Planting & Sprouting
2-4 weeksSeed corms are planted in warm soil; sprouts emerge with initial leaf development after 2-3 weeks
Keep soil consistently warm (70-80°F) and moist. Use disease-free certified seed corms. Plant after last frost and soil reaches 60°F minimum.
Vegetative Growth
8-12 weeksPlant develops multiple stems and large, heart-shaped leaves with purple coloring. Foliage expands rapidly; underground corm development begins
Maintain consistent moisture and humidity. Apply mulch around base. Fertilize monthly with balanced or phosphorus-rich fertilizer. Remove lower dead leaves. Stake taller varieties if needed.
Corm Development
12-16 weeksCorms thicken underground while foliage continues to grow. Plant reaches full height. Small cormel (baby corm) clusters develop around main corm
Continue regular watering and monthly feeding. Avoid waterlogging but maintain moisture. Mulch to regulate soil temperature. Monitor for pests and disease.
Maturation
4-8 weeksCorms reach full size (6-8 inches diameter typical). Foliage may begin to yellow as plant enters dormancy. Above-ground parts may die back in cooler seasons
Reduce watering slightly as foliage fades. Continue light feeding until growth stops. Protect from unexpected cold. Monitor for any remaining pest issues.
Harvest
Harvest windowPlant is ready for harvest when leaves begin to brown and die back, typically 8-10 months after planting
Harvest carefully to avoid damaging corms. Lift entire plant with garden fork. Allow harvested corms to cure in warm, dry location for 1-2 weeks. Store in cool (55-60°F), humid conditions.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Use neem oil spray, insecticidal soap, or reflective mulch. Introduce beneficial insects. Remove affected leaves.
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Increase humidity through misting. Use horticultural oil or neem spray. Wash foliage with water spray. Maintain good air circulation.
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Apply neem oil or insecticidal soap every 7 days. Remove infested leaves. Isolate severely infested plants.
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Spray with horticultural oil. Remove scales manually with soft brush. Apply neem oil weekly until controlled.
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Ensure excellent drainage and air circulation. Avoid overhead watering. Remove infected leaves immediately. Apply copper fungicide preventatively in humid conditions. Use disease-free seed corms.
Uses
Starchy Tuber Staple Food
CulinaryPurple Dasheen corms are boiled, roasted, fried, or pounded into fufu. The starchy, slightly nutty corm is a carbohydrate staple in Caribbean, African, and Asian cuisines, providing sustained energy. The leaves (called callaloo) are also edible and used in soups and stews. [source]
Digestive and Nutritional Support
MedicinalPurple Dasheen is rich in fiber, potassium, manganese, and vitamin B6, supporting digestive health and metabolism. Traditional medicine uses the plant to address gastrointestinal issues and provide sustained energy. The high mineral content makes it valuable for bone health and blood regulation. [source]
Natural Starch Production
HouseholdDasheen corms contain high levels of starch that can be extracted and used as a natural thickening agent for cooking, or dried and ground into flour for gluten-free baking. This versatile starch can also be used for laundry and fabric treatments. [source]
Pollinator and Food Source
WildlifeWhile primarily grown for tubers, Purple Dasheen's inflorescences (spathes) provide nectar for beneficial insects, bees, and hummingbirds. The lush foliage offers shelter for garden wildlife in tropical and subtropical gardens. [source]
Ornamental Foliage Plant
CraftThe distinctive purple-tinted stems and large, dramatic heart-shaped leaves make Purple Dasheen an attractive ornamental plant for tropical garden design. The bold foliage adds structure and visual interest to humid shade gardens. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest when foliage begins to yellow and brown, typically 8-10 months after planting. Gently dig around the plant with a garden fork or spade, working from the outside inward to avoid damaging the main corm. Lift the entire plant and shake off excess soil. The main corm is the primary harvest, though cormel clusters can also be saved for replanting or eating. Cure harvested corms in a warm (75-85°F), well-ventilated, dry location for 1-2 weeks to harden the skin and extend storage life. Store cured corms in a cool (55-60°F), humid environment with good air circulation for up to 6 months.
Fun Facts
- 🌱 Purple Dasheen has been cultivated for over 5,000 years in Southeast Asia and is one of the oldest cultivated crops, predating the potato by millennia.
- 🌱 The plant contains calcium oxalate crystals that can cause throat irritation if eaten raw, but cooking completely neutralizes this compound, making the corm safe and delicious.
- 🌱 In the Caribbean, Purple Dasheen is so culturally significant that it appears in national dishes—Trinidadian 'callaloo' and 'coo-coo' rely heavily on this plant.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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