More about the Cast Iron Plant...
As the various common names suggest, the cast-iron plant is one tough species. It will practically grow in the dark. Excellent for those difficult to fill areas in deep shade. Upright, bold, dark green leaves form attractive clumps in the garden and contrast wonderfully with surrounding, light-colored plants. It can be grown as an evergreen perennial outdoors in zones 8-11 and ranks right up there with snake plants and philodendrons as being an almost indestructible houseplant.
Cast Iron Plant is great for use in shady gardens and container plantings to provide bold texture and a vertical accent. Plant as a specimen in large containers or in small to large groupings in landscape beds. Perfect under large shade trees, decks, covered porches and any other very shady location. Combines nicely with fine-textured perennial ferns, Caladiums, Lamium, Variegated Vinca Major and other shade-loving plants.
Capable of surviving under very low light conditions coupled with extremes of temperatures and irregular watering. Prefers a well-drained, moist soil of average fertility. Hardey in USDA Zones 8-11