How to Grow Tree Cotton
Wikimedia Commons
Tree Cotton
Gossypium arboreum
shrubTree cotton is a perennial cotton species native to India that grows as a woody shrub, typically reaching 3-6 feet tall. Unlike annual cottons, it can be cultivated as a semi-permanent crop and produces finer, shorter staple fibers. The plant bears attractive yellow flowers with red centers that develop into cotton bolls.
When should you plant Tree Cotton in your zone?
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Example Tree Cotton timeline · Pittsburgh, PA (Zone 6b)
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Plant Tree Cotton
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 Tree Cotton
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Tree Cotton dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in USDA zones 9b-11; can be grown as an annual in zones 8-9
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Get my Tree Cotton timeline →Growth Stages
Seedling
2-3 weeksCotyledon stage with two seed leaves emerging; first true leaves appear within 1-2 weeks. Seedlings are tender and susceptible to damping off.
Maintain consistent moisture without waterlogging. Provide bright light and protect from cold temperatures below 60°F. Thin to strongest seedlings once true leaves appear.
Vegetative Growth
4-8 weeksPlant develops multiple branches and deeper root system. Foliage is lush and green with large lobed leaves. Height increases 1-2 feet during this phase.
Monitor for pests regularly. Provide balanced nitrogen fertilization to encourage foliar growth. Remove dead or diseased branches. Establish sturdy framework.
Flowering
4-6 weeksPlant produces abundant flower buds along branch tips. Flowers open in morning, showing pale yellow petals with deep red or purple centers. Flowers typically last one day.
Shift fertilizer emphasis to potassium and phosphorus to support flowering. Maintain consistent watering. Protect from excessive nitrogen which promotes foliage over flowers. Monitor for flower bud abscission.
Boll Development
6-8 weeksFertilized flowers produce green fruiting bodies (bolls) that rapidly enlarge. Bolls contain developing fibers and seeds within protective capsule.
Reduce nitrogen fertilizer. Maintain steady water supply without overwatering. Ensure adequate phosphorus and potassium. Support heavy boll load with light staking if needed.
Boll Maturity & Harvest
3-4 weeksBolls turn brown and split open at top seams, revealing fluffy white or cream-colored fiber. Mature bolls burst and dry naturally on plant.
Reduce watering as bolls mature. Allow full drying on plant for easier harvest. Harvest opened bolls promptly to prevent fiber quality degradation and seed germination.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray strong water stream; use insecticidal soap or neem oil; encourage beneficial insects like ladybugs and lacewings
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Yellow sticky traps; reflective mulch; insecticidal soap; horticultural oil; neem oil treatments
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Increase humidity; mist foliage regularly; spray with water; use neem oil or sulfur-based fungicides
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Hand-pick caterpillars; Bt (Bacillus thuringiensis) spray; pheromone traps; neem oil applications
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Row covers for young plants; diatomaceous earth; neem oil; trap crops
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Allow soil to dry between waterings; use yellow sticky traps; reduce humidity; apply sand layer on soil surface
Uses
Cottonseed Oil Extraction
CulinaryCotton seeds can be pressed to extract cottonseed oil, historically used for cooking and as a food ingredient. The oil is refined for culinary purposes in traditional cuisines, particularly in South Asia and parts of Africa. [source]
Fiber & Textile Production
CraftTree cotton produces premium-quality fibers suitable for hand-spinning, weaving, and textile crafting. The shorter staple length makes it ideal for traditional spinning wheels and produces characterful, artisanal fabrics. [source]
Natural Batting & Stuffing
HouseholdProcessed fiber from Gossypium arboreum can be used as natural batting for quilting, stuffing pillows, cushions, and bedding without synthetic additives. The pure cellulose content makes it hypoallergenic. [source]
Traditional Ayurvedic Uses
MedicinalIn traditional Indian medicine (Ayurveda), various parts of tree cotton have been used to treat wounds, inflammation, and digestive issues. The plant is valued for its cooling properties in traditional healing systems. [source]
Ornamental Garden Plant
HouseholdTree cotton serves as an attractive ornamental shrub with its large lobed foliage and striking yellow flowers with red centers. It provides visual interest while being a productive food/fiber plant. [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 bolls when they have completely split open and fiber is fluffy and dry. Wear gloves—sharp boll edges can cut skin. Gently pull bolls apart to separate fiber from seeds. Harvest in the morning when bolls are dry. For textile use, allow bolls to fully mature and dry on plant for best fiber quality. Store harvested fiber in dry conditions away from moisture.
Fun Facts
- 🌱 Gossypium arboreum is one of the oldest domesticated cotton species and has been cultivated in India for over 5,000 years, with evidence of cotton textile production dating to the Indus Valley Civilization.
- 🌱 Unlike annual cotton species, tree cotton can live 5-10+ years and regrow from woody stems after cutting, making it a true perennial crop in tropical climates.
- 🌱 The flowers of tree cotton are attractive to pollinators and beneficial insects; each flower typically lasts only one day but the plant produces thousands of flowers over its blooming period.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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