Common Name: delosperma
Type: Herbaceous perennial
Family: Aizoaceae
Zone: 4 to 8
Height: 0.00 to 0.25 feet
Spread: 1.00 to 1.50 feet
Bloom Time: June to September
Bloom Description: Fuchsia
Sun: Full sun
Water: Dry to medium
Maintenance: Medium
Suggested Use: Naturalize
Flower: Showy
Tolerate: Drought
Culture
Grow in average, dry to medium, well-drained soils in full sun. Prefers a dryish, sandy soil. Good soil drainage is essential for the plant, particularly in winter where moist to wet soils can be fatal. Avoid overwatering. Good tolerance for drought and heat. Best grown in a sheltered location in the St. Louis area where plants may not be reliably winter hardy. Protect in winter. Plants spread along the ground sometimes rooting as they go to form an attractive ground cover. Cuttings root easily. Succulent leaves pushed into soil will often root to form new plants.
Although 'John Proffitt' is reportedly winter hardy to USDA Zone 4, winter survival in St. Louis can still be a problem if soils are not sharply drained and remain moist to wet for extended periods of time. Siting plants on a raised bed may be helpful.
Noteworthy Characteristics
Delospora is a genus of about 150 species. They are commonly called ice plants.
Genus name comes from the Greek words delos, meaning "evident" and sperma, meaning "seed" in reference to the exposed seeds.
Foliage is covered with transparent flakes that somewhat resemble tiny pieces of ice, hence the common name.
‘John Proffitt’ is a succulent, mat-forming, ice plant cultivar that some nurseries are claiming is winter hardy to USDA Zone 4. It typically grows to only 3” tall but spreads to 20” wide. Foliage is covered with intense bright fuchsia flowers (to 1.5” diameter) with creamy white centers from late May to fall. Intensity of the flower color and length of the bloom enhances the ornamental interest of these plants. This cultivar reportedly resembles D. cooperii, but has better winter hardiness. Succulent fleshy green foliage is sometimes tinged with purple in winter. Plants are evergreen in warm winter climates, but at best only semi-evergreen in the St. Louis area. ‘John Proffitt’ is often sold in commerce under the trade name of TABLE MOUNTAIN.
Problems
No serious insect or disease problems. Watch for aphids and mealybugs. Winter hardiness may be a problem in the St. Louis area.
Uses
Ground cover or edger. Grows well in hot, dry locations. Also effective in containers.