Chinese Soapberry, Soap Berry, Chinese Soapberry, Soapnut Tree. This is a fast-growing tropical deciduous tree native from India to Japan. The fruits are smooth and yellow to orange. The plant is medicinally. The seeds are edible, usually crushed and boiled and used in desserts. Seed kernels can be used as fertilizer after seed oil extraction. Due to its high saponin content, the fruits can be used as substitute for soap and for restoring and brightening tarnished silverware. Powdered seeds have insecticidal properties. Ordering seeds info