Agave cupreata is a dwarf agave, a rosette-forming succulent perennial. This particular cultivar is the smaller version of Agave bovicornuta and is often nicknamed "Dwarf Cowhorn." This showy succulent features thick, long, broad leaves edged with rust-colored teeth and grows to a size of only 18 inches tall and 24 inches wide. Agave cupreata is a popular choice with home gardeners who cannot grow agaves outdoors but can grow them as houseplants. Care of Agave cupreata is similar to that of other agaves and identical to care of the Agave bovicornuta.
Choose a location that gets at least six hours of sunlight per day, but do not place the Agave cupreata where it will get direct afternoon sunlight, which can scorch the succulent leaves. A site that is exposed to morning sunlight followed by dappled afternoon shade is ideal. A south-facing window or one that is filtered with a curtain or blind is good for indoor plants.
Plant your Agave cupreata in the proper planting medium. A loose, well-draining medium is absolutely critical, according to Dr. Rick Schoellhorn, a horticulturist with the University of Florida. Container soil should be equal parts coarse sand, perlite and peat moss. If growing Agave cupreata outdoors, amend the soil with equal amounts of peat moss and sand down to a depth of 12 inches.
Water your Agave cupreata only when the soil dries out completely. This plant does not like moist soil and will quickly die if the roots are left sitting in standing water. Empty the water catch tray immediately if your succulent is in a container.
Fertilize your Agave cupreata with a balanced (10-10-10), water soluble fertilizer in the spring, and then once a month throughout the growing season. Stop fertilizing in the fall so that the plant can rest.
Keep your Agave cupreata warm. Minimum daytime temperatures should be in the high 60s or low 70s F, although the plant can withstand much hotter temperatures. A drop of at least 10 degrees during evening hours is beneficial. If the weather is unusually hot or cold for an extended period of time, the succulent will stop growing, but the plant will not usually die.