Moreton Bay Chestnut

(Castanospermum australe)

Moreton Bay Chestnut (Castanospermum australe)

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Estimated Native Range
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Summary

Castanospermum australe, commonly known as Moreton Bay Chestnut, is an evergreen tree native to the coastal rainforests and riverine forests of Eastern Australia and the island of Vanuatu. It can reach heights of 52-110 feet (16-34 meters) and a width of 15-36 feet (4.5-11 meters). This species is characterized by its glossy, dark green pinnate leaves and large panicles of showy red, yellow, and orange pea-like flowers that bloom in the summer, followed by large, distinctive seed pods containing shiny, chestnut-like seeds.

Moreton Bay Chestnut is valued for its ornamental flowers and as a shade tree in tropical and subtropical regions. It is often used in urban planting, large gardens, and as a potted plant in cooler climates. The tree prefers well-drained, fertile soils and requires regular watering, particularly during dry periods. It thrives in full sun to part shade. While it is generally low-maintenance, it can be susceptible to root rot in poorly drained soils. In cultivation, it is important to be aware of its potential invasiveness when grown outside its native range, as it can displace local vegetation.CC BY-SA 4.0

Plant Description

  • Plant Type: Tree
  • Height: 52-110 feet
  • Width: 15-35 feet
  • Growth Rate: Slow
  • Flower Color: Red, Yellow, Orange
  • Flowering Season: Summer
  • Leaf Retention: Evergreen

Growth Requirements

  • Sun: Part Shade
  • Water: Medium
  • Drainage: Fast

Common Uses

Bird Garden, Erosion Control, Showy Flowers

Natural Habitat

Native to coastal rainforests and riverine forests of Eastern Australia and Vanuatu

Other Names

Common Names: Blackbean

Scientific Names: , Castanospermum australe, Castanocarpus australis, Castanospermum australe var. brevivexillum, Castanospermum brevivexillum, Castanospermum cunninghamii, Vieillardia grandiflora,

GBIF Accepted Name: Castanospermum australe A.Cunn. ex Mudie