Big-Leaf Mahogany is a large deciduous tree, growing up to 45-60 m tall and 80 cm trunk diameter. The trunk is straight and cylindrical, slightly grooved, with well-developed spurs. The leaflets are asymmetric, 5-12 cm long, and 2-5 cm wide, with pointed or long pointed tip. The tree prefers rich, deep, and well-drained soils, with moisture available most of the year.