Common Name: ice plant
Type: Herbaceous perennial
Family: Aizoaceae
Zone: 5 to 9
Height: 0.25 to 5.00 feet
Spread: 1.00 to 1.50 feet
Bloom Time: May to September
Bloom Description: Red with yellow center eye
Sun: Full sun
Water: Dry
Maintenance: Medium
Suggested Use: Ground Cover
Flower: Showy
Tolerate: Rabbit, Deer, Drought, Dry Soil, Shallow-Rocky Soil
Culture
Best grown in dry, sharply-drained soils in full sun. This plant will grow poorly or die in any soil that is not well-drained. Avoid unamended clay soils. Tolerates average to lean soils including sandy and gravelly ones. Water sparingly during the growing season. Plants have good tolerance for heat and drought. Unfortunately, plants are not reliably winter hardy to the St. Louis area where they should be sited in sheltered locations with winter protection and sharp drainage.
Noteworthy Characteristics
Delosperma cooperi, commonly called ice plant, is native to South Africa. It typically forms a vigorous, succulent, spreading, evergreen ground cover in warm winter areas of the United States. However, north of USDA Zones 7 (which includes the entire St. Louis area), it is at best semi-evergreen and is not reliably winter hardy. This is a succulent mat-forming plant that typically grows to 3” tall and spreads quickly to 24” or more. Daisy-like, bright red-purple flowers (to 2” diameter) cover the plant with bloom from June to September. The neon-like intensity of the flower color and length of bloom greatly enhance the ornamental interest of these plants. Succulent, fleshy, cylindrical, medium green leaves.
Genus name comes from the Greek words delos, meaning "evident" and sperma, meaning "seed" in reference to the exposed seeds.
Specific epithet honors English gardener Thomas Cooper (1815-1913) who collected plants in South Africa from 1859-1862.
Foliage is covered with transparent flakes that somewhat resemble tiny pieces of ice, hence the common name.
'WOWDAY2' is a compact, floriferous mat-forming selection of ice plant that features large blooms. The bicolor flowers have red petals with a yellow center eye and will reach up to 1.25" in diameter. Mature clumps will reach 4-6" tall and spread to fill a 1.5' area. Plant patent number PP25645 applies to this cultivar.
Problems
No serious insect or disease problems. Aphids and mealybugs may visit. Winter hardiness is a problem in St. Louis. Deer and rabbits tend to avoid this plant.
Uses
Sunny but sheltered areas of desert gardens, rock gardens, border fronts or slopes. Ground cover or edger.