Mitragyna speciosa trees usually grow to a height of 12–30 ft (3.7–9.1 m) tall and 15 ft (4.6 m) wide, although some species can reach 40–70 ft (12–21 m) in height.[11] Mitragyna speciosa can be either evergreen or deciduous depending on the climate and environment in which it is grown. The stem is erect and branching.