Sansevieria Trifasciata Zeylanica
Sansevieria trifasciata Black Coral is a stunning, almost gothic, example of Mother-in-Law's Tongue, with dark green, almost black colouring and wavy horizontal bands of white-grey-green. Unlike Sansevieria Trifasciata Zeylanica which has broader leaves, Black Coral has narrow upward pointing leaves marked with gray-green wavy bands on a deeper green background. Color is darker, almost black, in lower light levels, and tends to be more pronounced on newer foliage.
It is an evergreen perennial plant forming dense stands, spreading by way of its creeping rhizome, which is sometimes above ground, sometimes underground. Its stiff leaves grow vertically from a basal rosette. Mature leaves are dark green with light gray-green wavy bands and usually range between 12-18 in long and 10 - 12 in wide.
It prefers bright light with some sun. They can adapt to full sun.
A loose, well-drained potting mix.Sandier soil is good for them.
Let the soil dry between waterings. During winter, reduce watering to twice a month, or whenever the soil is dry to the touch. The biggest danger is over watering, especially in the winter.
Feed a mild cactus fertilizer during the growing season; do not fertilizer in the winter.
It is now used predominantly as an ornamental plant, outdoors in warmer climates, and indoors as a houseplant in cooler climates.