How to Grow Elephant Ear Ube
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Elephant Ear Ube
Colocasia esculenta var. ube
vegetableElephant Ear Ube is a tropical root vegetable with large, heart-shaped leaves and purple-pigmented corms (underground tubers) prized in Asian and Pacific cuisines. The plant is ornamental and edible, valued for both its striking foliage and starchy, nutty-flavored tubers. It thrives in warm, humid conditions and can reach 3-6 feet in height.
When should you plant Elephant Ear Ube in your zone?
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Example Elephant Ear Ube timeline · Pittsburgh, PA (Zone 6b)
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Plant Elephant Ear Ube
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 Elephant Ear Ube
Around Aug 15≈ 120 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Zones 10-11 year-round; zones 8-9 as summer annual (dig and store corms in winter)
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Get my Elephant Ear Ube timeline →Growth Stages
Dormancy/Planting
2-4 weeks until emergenceCorms are stored or planted; no visible above-ground growth yet. Corms may sprout small eyes.
Store corms in cool (50-60°F), dry conditions before spring planting. Plant after soil reaches 65°F. Keep soil warm and moist to encourage sprouting.
Emergence & Seedling
2-3 weeksFirst leaves unfurl from the corm; a single shoot emerges with 1-3 small leaves.
Ensure consistent moisture and warmth (70-80°F optimal). Provide filtered light. Monitor for damping-off. No fertilizer needed yet.
Vegetative Growth
8-12 weeksLarge, heart-shaped leaves expand rapidly. Plant develops multiple petioles (leaf stems). Lush foliage with 3-8 leaves visible.
Fertilize every 3-4 weeks with balanced fertilizer (10-10-10) or high-nitrogen formula. Maintain high humidity and consistent moisture. Mulch around base. Remove any damaged leaves.
Corm Development
8-10 weeksUnderground corms begin to swell and enlarge. Foliage remains vigorous but growth slows. Secondary cormels (small tubers) may form around main corm.
Continue fertilizing with balanced or potassium-rich formula to support tuber development. Maintain moisture but allow soil to dry slightly between waterings. Reduce nitrogen to avoid excessive leafy growth.
Maturity & Harvest-Ready
4-6 weeks before harvestCorms reach full size (4-10 inches long). Leaves may yellow or decline in late season. Plant enters dormancy as temperatures cool.
Stop fertilizing 2-3 weeks before harvest. Reduce watering frequency as plant naturally senesces. In zones 8-9, dig before first frost. In zones 10-11, can harvest year-round or allow dormancy.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with strong water stream; use insecticidal soap or neem oil for heavy infestations. Remove affected leaves.
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Increase humidity; mist foliage regularly. Apply sulfur dust or miticide if severe.
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Remove with alcohol-soaked cotton swab; apply horticultural oil or insecticidal soap. Isolate heavily infested plants.
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and
Hand-pick and remove debris where they hide. Apply copper tape around pots. Use slug bait if necessary.
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and
(fungal/bacterial)
Improve air circulation; avoid overhead watering. Remove affected leaves. Apply fungicide if persistent. Ensure well-draining soil.
Uses
Staple starch and traditional cooking
CulinaryUbe corms are boiled, roasted, steamed, or fried as a starchy side dish in Filipino, Hawaiian, and Southeast Asian cuisines. The purple flesh adds visual appeal to dishes and has a slightly sweet, nutty flavor. [source]
Desserts and beverages
CulinaryPurple corms are processed into flour, paste, and ice cream. Ube flavoring is popular in Filipino pastries, cakes, and drinks, creating distinctive purple-colored desserts. [source]
Traditional medicine and nutrition
MedicinalIn traditional Asian medicine, taro is valued for digestive benefits and as a nutritious staple. Corms are rich in fiber, potassium, manganese, and antioxidants. [source]
Natural dye production
HouseholdThe purple pigment in ube corms can be extracted and used as a natural dye for textiles and crafts, producing shades of purple and blue. [source]
Decorative tropical foliage
OrnamentalThe large, dramatic heart-shaped leaves make Elephant Ear Ube a striking ornamental plant for tropical gardens, containers, and indoor spaces with high humidity. [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 corms are 4-10 inches long and leaves begin to decline, typically 120-180 days after planting. In zones 10-11, can harvest year-round; in cooler zones, dig all corms before first frost. Use a spade or garden fork to carefully loosen soil and lift corm cluster without damaging tubers. Allow corms to dry 2-3 days before storing in cool (50-60°F), dry place for up to 3-4 months.
Fun Facts
- 🌱 Ube (purple taro) is culturally significant in the Philippines and is featured prominently in Filipino cuisine and celebrations, with 'ube' becoming a trendy flavor globally in recent years.
- 🌱 The purple color in ube corms comes from anthocyanins, the same powerful antioxidants found in blueberries and purple grapes.
- 🌱 Elephant Ear plants can produce flowers that resemble a calla lily (a pale yellow spadix), though they are grown primarily for their corms and foliage rather than blooms.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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