|Ripe Clausena lansium fruits|
Its leaves are smooth and dark green. White flowers in late March are white, with four or five petals, about 3–4 mm in diameter. The fruit is oval, about 3 cm long and 2 cm in diameter, and contains two to five seeds that occupy ~40-50% of the fruit volume. The tree reaches a maximum height of 20 meters. It grows well in tropical or subtropical conditions, and is susceptible to cold. Wampee trees grow well in a wide range of soil, but will grow best in rich loam.
The wampee is cultivated for its fruit, which looks like a grape. The tree is popular in China, Vietnam, the Philippines, Malaysia, and Indonesia. Less frequently, it is grown in India, Sri Lanka, and Queensland; occasionally, it is cultivated even in Florida and Hawaii.