Ceiba speciosa, the floss silk tree (formerly Chorisia speciosa), is a species of deciduous tree that is native to the tropical and subtropical forests of South America. It has several local common names, such as palo borracho (in Spanish literally "drunken stick"), or árbol del puente, samu'ũ (in Guarani), or paineira (in Brazilian Portuguese). In Bolivia, it is called toborochi, meaning "tree of refuge" or "sheltering tree". In the USA it often is called the silk floss tree. It belongs to the same family as the baobab; the species Bombax ceiba; and other kapok trees. Another tree of the same genus, Ceiba chodatii, is often referred to by the same common names.
The natural habitat of the floss silk tree is in the northeast of Argentina, east of Bolivia, Paraguay, Uruguay, and southern Brazil. It is resistant to drought and moderate cold. It grows fast in spurts when water is abundant, and sometimes reaches more than 25 metres (82 ft) in height. Its trunk is bottle-shaped, generally bulging in its lower third, measuring up to 2 metres (7 ft) in girth. The trunk is studded with thick, sharp conical prickles that deter wild animals from climbing the trees. In younger trees, the trunk is green due to its high chlorophyll content, which makes it capable of performing photosynthesis when leaves are absent; with age it turns to gray.
The Silk Floss Tree (Ceiba speciosa, formerly Chorisia speciosa) is a spectacular, fast-growing deciduous tree native to South American subtropical and tropical forests. Famous for its showy, hibiscus-like pink flowers and thorny, bottle-shaped trunk, it is widely planted in warm, sunny climates across the globe.
Key Characteristics & Anatomy
The Trunk: Young trees feature green, photosynthetic bark studded with large, cone-shaped, woody prickles that deter wild animals from climbing. As the tree ages, the bark turns gray, and the base often swells into a distinctive "bottle" shape to store water.
The Flowers: Blooming typically occurs in late summer, autumn, or early winter. The large (10-15 cm) flowers have five frilly petals that are vibrant pink to magenta at the tips and creamy-white with brown spots near the throat. The tree often drops its leaves just before or during its bloom.
The Seeds & Floss: Following the blooms, the tree produces pear-shaped woody seedpods. When the pods mature and split open, they reveal bean-like black seeds embedded in a dense, pure-white, cotton-like fiber that allows the wind to disperse them.
Uses & Practical ApplicationsOrnamental Value: Thanks to its breathtaking canopy of blossoms, it is frequently used as a prized ornamental or shade tree in landscapes and public gardens.The "Silk": The buoyant, cottony floss inside the seedpods was historically harvested by indigenous groups and later used as stuffing for pillows, cushions, and life jackets.
Wood & Craftsmanship: The tree's lightweight, supple wood has been used in craftsmanship to make paper pulp and traditional dugout canoes.Growing ConditionsClimate: It thrives in full sun and is highly drought-tolerant. It is not cold-hardy; while it can survive short, light frosts, prolonged freezing temperatures will damage or kill the tree.
Soil: It is adaptable to various soil types (sand, loam, clay) but requires good drainage.
Maintenance: It has few serious pest issues and is resilient against wind and breakage, though pruning is required in its early years to encourage a strong structural form.
