We depend on donations from users of our database of over 8000 edible and useful plants to keep making it available free of charge and to further extend and improve it. In recent months donations are down, and we are spending more than we receive. Please give what you can to keep PFAF properly funded. More >>>

Follow Us:


Bombax ceiba - L.

Common Name Red Silk Cotton Tree, Kapok Tree
Family Malvaceae
USDA hardiness 10-12
Known Hazards Seed is poisonous if ingested
Habitats Hot, dry river valleys, savannah; at elevations below 1,400 metres in southern China[ 266 ]. Humid lowland deciduous forests[ 307 ]. Often found near stream banks[ 320 ].
Range E. Asia - southern China, Indian subcontinent, Myanmar, Thailand, Laos, Vietnam, Malaysia, Indonesia, Philippines to Papua New Guinea and Australia.
Edibility Rating    (2 of 5)
Other Uses    (4 of 5)
Weed Potential No
Medicinal Rating    (2 of 5)
Care (info)
Tender Well drained soil Moist Soil Full sun
Bombax ceiba Red Silk Cotton Tree, Kapok Tree

Bombax ceiba Red Silk Cotton Tree, Kapok Tree


Translate this page:


Kapok Tree, Bombax ceiba, is a fast-growing, tropical, large tree up to 20-25 m tall and spreads 8-15 m wide. It has an erect stem that develops buttresses when mature and an umbrella shaped crown. The leaves are bright green, leathery, and rounded. The flowers are cup shaped and red. The fruits are brown oval capsule. Plant parts like flowers, young root, gum, leaves, shoots, and bark have medicinal properties and are used as treatment for various conditions and diseases like cholera, fractures, toothache, coughs, urinary problems, influenza, and snake bites among others. The flowers are edible when cooked and are highly valued as a curry vegetable. Young leaves are edible as well and cooked and eaten as vegetable. Moreover, ripe seeds and young roots are roasted. Edible oil can be obtained from the seed, fibre from the inner bark, and gum containing tannins from the bark and sapling root. Seed oil is also used in soap making. Other common names include red silk cotton tree and silk cotton tree. Boichu, Bombax, Booruga, Boorunga, Bouro, Bula, Buroh, Edelsong, Illavam, Kaanti-senbal, Kantakadruma, Kantesavar, Katesawar, Kempu-booruga, Leptan, Malabulak, Mu mian, Mulilavu, Mullelava, Mullila-pula, Mullilavau, Mullilavu, Mullubooruga, Neibie, Nglo, Nuoliu, Pagun, Pan-ya, Panchu, Phakong, Pula-maram, Pulai, Rakta-pushpa, Red Silk Cotton tree, Roktosimul, Salmali, Samar, Sanar, Saur, Savar, Savri, Sawar, S?mul, Senur, Shembal, Shemolo, Shevari, Shevri, Shimla, Shimul cotton, Simal, Simalo, Simalu, Simla, Simlo, Simolu, Singi.

Physical Characteristics

 icon of manicon of lolypop
Bombax ceiba is a deciduous Tree growing to 25 m (82ft) by 22 m (72ft) at a medium rate.
See above for USDA hardiness. It is hardy to UK zone 10 and is frost tender. The flowers are pollinated by Birds, Bees.
It is noted for attracting wildlife.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: neutral and basic (mildly alkaline) soils and can grow in very alkaline soils.
It cannot grow in the shade. It prefers dry or moist soil.

UK Hardiness Map US Hardiness Map


Bombax malabaricum DC. Gossampinus malabarica (DC.) Merr. Salmalia malabarica (DC.) Schott & Endl.


Edible Uses

Edible Parts: Flowers  Inner bark  Leaves  Oil  Root  Seed  Seedpod
Edible Uses: Gum  Oil  Tea

Edible portion: Roots, Leaves, Flowers, Fruit, Seeds - oil, Gum. Flowers - cooked or pickled. They are highly valued as a curry vegetable[ 307 ]. The flower buds and the calyx of not fully opened flowers are eaten cooked as a vegetable[ 317 ]. Flowers are dried and pounded and used for bread also used in five flower tea. Young leaves - cooked and eaten as a vegetable[ 404 ]. Ripe seeds are eaten roasted[ 301 , 317 ]. An edible fatty oil is obtained from the seed[ 301 ]. The seeds contain 22-25% oil. Young roots - The taproot is peeled and eaten raw or roasted[ 404 ]. Rich in starch[ 404 ]. Gum[ 404 ]. The buds, young pods and roots of seedling can be eaten cooked. The young bark is used as a famine food.

References   More on Edible Uses

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
Antipyretic  Antitussive  Astringent  Cholera  Demulcent  Diuretic  Dysentery  Hypoglycaemic  
Hypotensive  Leprosy  Mouthwash  Refrigerant  Stings  Tonic  Urinary

The flowers are astringent and refrigerant[ 404 ]. They are used to treat cutaneous troubles[ 404 ]. The young roots are diuretic and tonic[ 404 ]. They are used in the treatment of cholera, tubercular fistula, coughs, urinary complaints, nocturnal pollution, abdominal pain due to dysentery, and impotency[ 404 ]. The gum is astringent, demulcent and tonic[ 404 ]. It is used in the treatment of dysentery, haemoptysis in pulmonary tuberculosis, influenza and menorrhagia[ 404 ]. The leaves are hypotensive and hypoglycaemic[ 404 ]. A decotion of the shoots have reputedly been used to treat ulcers of the palate, syphilis, leprosy and spider or snake bites[ 404 ]. Combined with the roots of Moghania macrophylla, the fruit of Terminalia chebula and borax, they are used to treat enlarged spleen; they are combined with Capparis zeylanica and Carissa carandas to treat oedema; and with fenugreek to treat corns on the foot[ 404 ]. The seedlings have reputed antipyretic activity (when ground with a few leaves of fistula and Semecarpus anacardium). They are combined with Vitis spp. (part not specified) to treat carbuncle; and with Terminalia alata to treat haematuria[ 404 ]. The knots or the stem are used on bleeding gums (cooked in mustard oil with the bark of Zyzyphus rugosa and Ichnocarpus frutescens and then eaten[ 404 ]). The bark is reputedly used against cholera (usually combined with many other plants), pleurisy, stings and as a diuretic. It is used in bandages for lasting fractures or given in infusion for toothache before visiting the dentist[ 404 ].

References   More on Medicinal Uses

Now available: PLANTS FOR YOUR FOOD FOREST: 500 Plants for Temperate Food Forests and Permaculture Gardens.

An important new book from PFAF. It focuses on the attributes of plants suitable for food forests, what each can contribute to a food forest ecosystem, including carbon sequestration, and the kinds of foods they yield. The book suggests that community and small-scale food forests can provide a real alternative to intensive industrialised agriculture, and help to combat the many inter-related environmental crises that threaten the very future of life on Earth.

Read More


Other Uses

Bedding  Containers  Fibre  Gum  Insulation  Oil  Packing  Pioneer  Soap making  String  Tannin  Waterproofing  Wood

Other uses rating: High (4/5). Large Flowering Tree, Public Open Spaces, Specimen, Xerophytic. Agroforestry Uses: A fast-growing plant, tolerant of full sun even when small and with a wide range of uses, it can be used as a pioneer when restoring native woodland[ 404 , K ]. It can also be used as a pioneer when establishing a large woodland garden, being able to remain as a canopy tree as the garden matures[ 404 ]. Other Uses The seed floss is used as a stuffing material for pillows, cushions etc[ 310 , 454 ]. It is considered to be vermin-proof[ 404 ]. Waterproof and buoyant, it can be used as the filling in life jackets[ 418 ]. It is sometimes also as an insulating material in refrigerators etc; can be used as a packing material; and has sound-proofing properties[ 317 , 404 ]. It is of lower quality than the floss obtained from Ceiba pentandra[ 320 ]. A fibre is obtained from the inner bark[ 598 ]. It is suitable for cordage[ 454 , 598 ]. A transparent gum exudes from the bark and sapling root[ 307 ]. It is called 'Gum of Malabar'[ 46 ]. The gum contains tannins[ 404 ]. The gum can be mixed with ashes and castor oil, and is then used as a cement for caulking iron saucepans[ 404 ]. An oil obtained from the seed is used to make soap and for illumination etc[ 317 , 418 ]. It can be used as a substitute for cottonseed oil[ 404 ]. The fibrous bark is used for making ropes[ 320 ]. The greyish, dark-streaked wood is coarse-textured, straight-grained, light in weight, very soft and pithy[ 310 , 404 ]. It can be used to make packing cases, toys, matches, pencils etc[ 317 , 320 ]. Large trunks are often hollowed out to make canoes[ 307 ]. The wood has been recommended as a source of cellulose[ 46 ]. This plant is attractive to bees, butterflies and/or birds.

Special Uses

Attracts Wildlife  Carbon Farming  Food Forest

References   More on Other Uses

Cultivation details

Industrial Crop: Fiber  Management: Standard  Regional Crop

A plant of the tropical, humid lowlands[ 320 ]. It grows best in areas where annual daytime temperatures are within the range 28 - 42°c, though it can tolerate 5 - 49°c[ 418 ]. It can resist occasional light frosts, with new growth being killed at -1°c, but dormant growth being tolerant down to -3°c[ 418 , 598 ]. It prefers a mean annual rainfall of 750 - 4,000mm, tolerating 500 - 5,000mm and preferring a distinct dry season[ 418 ]. Grows best in a sunny position[ 307 ]. Prefers a deep, rich, well-drained soil, but tolerating a wide range of conditions[ 307 , 404 ]. Established plants are drought tolerant[ 307 ], and can also withstand occasional inundation of the soil[ 404 ]. Prefers a pH in the range 5.5 - 6.5, tolerating 4.9 - 7.2[ 418 ]. A fast-growing plant, especially when young[ 404 ]. The plant can commence flowering when around 8 - 10 years old from seed[ 404 ]. The plant produces suckers, especially when young, though they often die after 2 - 3 years, especially as the tree grows older[ 404 ]. Young trees can be coppiced, but older trees will often fail to grow back after being cut down[ 404 ]. The tree has a thick bark which acts as an insulation and allows it to recover from fires[ 404 , 598 ].

Carbon Farming

  • Industrial Crop: Fiber  Clothing, rugs, sheets, blankets etc. Currently, almost none of our fiber are produced from perennial crops but could be!
  • Management: Standard  Plants grow to their standard height. Harvest fruit, seeds, or other products. Non-Destructive management systems.
  • Regional Crop  These crops have been domesticated and cultivated regionally but have not been adopted elsewhere and are typically not traded globally, Examples in this broad category include perennial cottons and many nuts and staple fruits.

References   Carbon Farming Information and Carbon Sequestration Information

Temperature Converter

Type a value in the Celsius field to convert the value to Fahrenheit:



The PFAF Bookshop

Plants For A Future have a number of books available in paperback and digital form. Book titles include Edible Plants, Edible Perennials, Edible Trees, and Woodland Gardening. Our new book to be released soon is Edible Shrubs.

Shop Now


Seed - sown fresh, without pre-treatment, they have a high germination rate[ 404 ]. Some reports suggest germination rates can be improved by pre-soaking the seeds for 12 hours prior to sowing[ 404 ], this is likely to refer to seeds that have dried somewhat[ K ]. Seeds can be sown in a sunny position, either in situ or in nursery beds. Sprouting takes place in 10 - 25 days[ 404 ]. Transplant 5cm tall seedlings to individual containers and plant out 12 months later[ 404 ]. Cuttings of half-ripe wood.

Other Names

If available other names are mentioned here

Kapok Tree, Bombax ceiba. Other common names include red silk cotton tree and silk cotton tree. Boichu, Bombax, Booruga, Boorunga, Bouro, Bula, Buroh, Edelsong, Illavam, Kaanti-senbal, Kantakadruma, Kantesavar, Katesawar, Kempu-booruga, Leptan, Malabulak, Mu mian, Mulilavu, Mullelava, Mullila-pula, Mullilavau, Mullilavu, Mullubooruga, Neibie, Nglo, Nuoliu, Pagun, Pan-ya, Panchu, Phakong, Pula-maram, Pulai, Rakta-pushpa, Red Silk Cotton tree, Roktosimul, Salmali, Samar, Sanar, Saur, Savar, Savri, Sawar, SŽmul, Senur, Shembal, Shemolo, Shevari, Shevri, Shimla, Shimul cotton, Simal, Simalo, Simalu, Simla, Simlo, Simolu, Singi.

Native Plant Search

Search over 900 plants ideal for food forests and permaculture gardens. Filter to search native plants to your area. The plants selected are the plants in our book 'Plants For Your Food Forest: 500 Plants for Temperate Food Forests and Permaculture Gardens, as well as plants chosen for our forthcoming related books for Tropical/Hot Wet Climates and Mediterranean/Hot Dry Climates. Native Plant Search

Found In

Countries where the plant has been found are listed here if the information is available

Found In: Africa, Andamans, Asia, Australia, Bangladesh, Burma, Cambodia, Central America, China, East Africa, East Timor, Hawaii, Himalayas, India, Indochina, Indonesia, Iraq, Laos, Malaysia, Myanmar, Nepal, Northeastern India, Pacific, Pakistan, Papua New Guinea, Philippines, PNG, SE Asia, Sikkim, Solomon Islands, South America, Sri Lanka, Tanzania, Thailand, Timor-Leste, USA, Vietnam, West Indies.

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

None Known

Conservation Status

IUCN Red List of Threatened Plants Status : This taxon has not yet been assessed.

Related Plants
Latin NameCommon NameHabitHeightHardinessGrowthSoilShadeMoistureEdibleMedicinalOther

Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.


Print Friendly and PDF

Expert comment



Botanical References

Links / References

For a list of references used on this page please go here
A special thanks to Ken Fern for some of the information used on this page.

Readers comment

Add a comment

If you have important information about this plant that may help other users please add a comment or link below. Only comments or links that are felt to be directly relevant to a plant will be included. If you think a comment/link or information contained on this page is inaccurate or misleading we would welcome your feedback at [email protected]. If you have questions about a plant please use the Forum on this website as we do not have the resources to answer questions ourselves.

* Please note: the comments by website users are not necessarily those held by PFAF and may give misleading or inaccurate information.

To leave a comment please Register or login here All comments need to be approved so will not appear immediately.

Subject : Bombax ceiba  
© 2010, Plants For A Future. Plants For A Future is a charitable company limited by guarantee, registered in England and Wales. Charity No. 1057719, Company No. 3204567.