Bombax costatum — an easy houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Bombax costatum

Bombax Costatum

Updated · 33 observations
ON THIS PLANT

Bombax costatum, commonly known as the African Bombax or Red Silk Cotton Tree, is a deciduous tree native to tropical regions of Africa. This tree can grow up to 30 meters tall, with a wide trunk that can reach a diameter of up to 2 meters. During the dry season, it produces large, showy flowers that are red or pink. These flowers are followed by sizable seed pods filled with cotton-like fibers, which are often used for stuffing pillows and cushions.

In many African countries, the African Bombax holds significant cultural importance. It is utilized for medicinal purposes and its timber is often used to craft furniture, drums, and various household items. Additionally, the tree has spiritual significance in some cultures, where it is believed to possess protective powers.

The African Bombax thrives in well-drained soils and prefers full sun exposure, although it can tolerate some shade. It grows best in warm climates with high humidity but can also endure drought conditions once it is established.

In summary, the African Bombax tree serves practical purposes by providing timber and cotton-like fibers, while also being an important cultural and spiritual symbol across many parts of Africa.

A note from PlantMom

The red kapok tree has strong resistance to disease and is usually not susceptible to illnesses. In terms of care, this plant is relatively low maintenance. When grown outdoors it needs minimal watering, and larger specimens typically do not need pruning. However, smaller plants should be pruned after they have finished blooming. The red kapok tree is suitable for anyone with an outdoor space, such as a garden or deck, and does not require extensive care experience.

— PlantMom
CARE GUIDE

How to keep Bombax Costatum.

Light

The red kapok tree comes from open habitats, such as sunny meadows and forest edges that provide abundant light. It thrives in Full Sun but can also tolerate Partial Sun, adapting well to various sunlight levels.

Temperature

The red kapok tree comes from tropical areas where the climate is usually warm and humid. As a result, it is well adapted to high temperatures and humidity. It does not tolerate sudden temperature changes and prefers a stable temperature, so avoiding indoor temperature fluctuations is important. It generally does not withstand cold and needs higher temperatures to grow. If the surrounding temperature drops too low, the plant may stop growing or even die.

Fertilizer

The best time to fertilize a red kapok tree is in early spring, as it breaks dormancy. This encourages overall growth and flower development. Fertilization improves foliage, stems, and branches, and supports the production of large, vibrant, long-lasting flowers. It helps transport nutrients from the roots to the flowers and enhances the plant’s health and disease resistance.

Pruning

To promote healthy growth and blooming in Bombax costatum, prune it in early spring. Begin by removing any dead branches. Next, thin out overcrowded areas to improve air circulation. Be careful not to prune too heavily, as this can stress the plant. Use clean, sharp tools for precise cuts to maintain the plant's structure and enhance its ornamental appeal.

CHARACTERISTICS

Botanical profile.

Plant Type
Tree
Life Cycle
Perennial
Genus
Bombax
Family
Malvaceae
Hardiness Zone
10-12
Mature Height
14.94 m to 24.99 m
Mature Spread
7.92 m to 11.89 m
Leaf Color
Green, Dark Green
Leaf Type
Deciduous
Flower Color
Red
Flower Size
10.16 cm to 15.24 cm
Bloom Time
Winter
Planting Time
Spring, Summer
Harvest Time
Spring
Native Area
Burkina Faso, Nigeria, Congo, Guinea, Guinea-Bissau, Niger, Chad, Benin, Mali, Sierra Leone, Cameroon, Togo, Ghana, Côte d'Ivoire, Gambia, Central African Republic
ALSO KNOWN AS

Other names.

en Red Silk Cotton
PLATES
Bombax costatum leaf
PLATE 01 · leaf
Bombax costatum leaf
PLATE 02 · leaf
Bombax costatum flower
PLATE 03 · flower
Bombax costatum flower
PLATE 04 · flower
Bombax costatum fruit
PLATE 05 · fruit
Bombax costatum bark
PLATE 06 · bark
ALSO IN THE LIBRARY

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