Copaifera langsdorffii, commonly known as the diesel tree, is a medium to large deciduous tree native to the tropical rainforests and savannas of South America, particularly Brazil. It typically grows to a height of up to 39 feet (12 meters) and is recognized for its dense, rounded canopy. The diesel tree produces small, white flowers during the dry season, which are followed by small, oily fruits. The flowers are not particularly showy but are valued for their ecological role. The tree’s bark is smooth and gray, and its wood is highly resistant to decay, making it useful in carpentry and construction.

Copaifera langsdorffii is notable for its oil-filled capillaries within the trunk, which can be tapped to collect oleoresin, a natural oil that can be used in biodiesel production. This oleoresin has also been traditionally used for medicinal purposes by Amazonian natives. In cultivation, the diesel tree is appreciated for its hardiness and the unique benefit of producing a renewable source of biofuel. It is also used in reforestation projects and can be planted as an ornamental tree in large gardens or parks. The tree prefers full sun and well-drained soils but can tolerate a range of soil types. It is drought-tolerant once established. European honey bees are attracted to the tree for its pollen, which supports apiculture in regions such as Brazil. However, care should be taken when planting this species outside its native range, as it has the potential to become invasive.CC BY-SA 4.0