From the extreme heat and dry climates of east and Southern Africa come the hardy ice plants (Delosperma spp.). There are two popular species, Purple ice plant (D. cooperi) and Orange-yellow iceplant (D. nubigenium), plus hybrid cultivars galore.

Ice plants are dependable zone 6 winter hardy succulents. They’re excellent candidates for roof top and rock gardens, co-habitating with other dryland sun-loving succulents. A poorly drained clay soil or a winter soggy soil would be their death knoll.

Ice plants survive in hot parched soils from central Kansas south thru Texas. You even see them in the urban heat and soils around New York City if the growing media is properly drained. A gritty sand-based container mix appears perfect. A favorite planting spot is on a south-facing sunny slope.

Depending on species and cultivars, their bright clear yellow, orange, red or purple flowers carpet the ground. Butterflies and other pollinators love them. Ground-hugging ice plants form a thick 1 to 4 inches high mat.

Generally, ice plants are short-lived perennials, lasting 2 to 3 years unless their site is uniquely suited. Minimal plant nutrition is recommended. You can irrigate every 4-6 weeks with water-soluble fertilizers such as Miracle-Gro™, Daniels™, or Jacks™ through mid-summer.

Dependable species and cultivars have been identified by Dr. Panayoti Kelaidis and staff at the Denver Botanical Garden which has increased the popularity of ice plant.