Premna is the genus of flowering plants in the mint family. Premna is a tropical tree often used for bonsai in Thailand, Philippines, Taiwan, and Indonesia. In the United States, we especially like it for bonsai as it has few pest problems and the leaves reduce very nicely. We also like it for bonsai because of the unique texture of the trunk. Does very well indoors.9 years old, 8-9" tall.