Dracaena angolensis has striped, elongate, smooth, greenish-gray subcylindrical leaves. They are up to 3 cm (1 in) diameter and grow up to 2 m (7 ft) above soil. The spear sansevieria grows fan-shaped, with its stiff leaves growing from a basal rosette. The species is interesting in having subcylindrical instead of strap-shaped leaves caused by a failure to express genes which would cause the cylindrical bud to differentiate dorsoventrally or produce a distinctive and familiar top and bottom surface to the leaf blade.The 3 cm (1 in) greenish-white tubular flowers are tinged with pink.
Online plant shop The Sill recommends watering sansevieria varieties every two weeks, but you can probably water it a bit less from about October to May, when it's not growing season. I have forgotten to water mine for about two months at a time without apparent damage.
You can feed the plant once a month spring through fall with a fertilizer especially made for succulents, mixed at half the recommended strength. Over feeding the plant can actually kill it as Sansevieria cylindrica is a light feeder. You should not feed during winters when the growth is slow.
Dragon trees can reach 20 feet or more when grown outdoors under the right conditions, although they are typically pruned back to around 6 feet when grown as potted plants. Each stem that is pruned back will develop two new stems, which will create a densely branched structure topped with the species's variegated, grasslike foliage.
