Lawsonia inermis, or henna, is a perennial tree growing from 6 to 25 feet tall. It thrives in full sun and high temperatures and can survive drought well, but cannot survive temperatures below 40 degrees farenheit and must be overwintered indoors in cold areas. Henna is relatively easy to grow as a potted plant, and produces clusters of fragrant flowers used in perfume.
Henna has been used for dyeing for thousands of years. The name henna also refers to the dye prepared from the leaves of Lawsonia inermis, which is used to dye skin, hair, and finger nails, as well as fabrics.