Delosperma
 
Included Mesembryanthemaceae in the famely Aizoaceae
Common Afrikaans names of species: D. carolinense, D. vogtsii : klipvygie, rotsvygie; D. floribundum : skaapvygie; D. herbeum : witbergvygie; D. macellum : rooibergvygie 
 
This predominantly summer rainfall genus has long been overlooked as a garden plant. Growth forms vary vastly and showy flowers are produced over long periods, thus making them ideal rockery subjects, while some species form low, dense clumps and are more suitable as groundcovers in shady spots. Some species found naturally at higher altitudes can withstand northern hemisphere winters without having to be nurtured in a glasshouse.
 
Delosperma  plants are perennials and can be upright, procumbent, prostrate or even cliff-dwelling. They vary from woody to herbaceous and some even have thick, succulent root systems, while others root at the nodes. Leaves are sessile and vary from flat to cylindrical, the surfaces often grooved and covered with bladder cells or with bladder cells modified to form hairs.
 
Flowers are borne singly or in clusters and colours vary from white, cream, yellow, orange to various shades of pink and even crimson. Flower size varies greatly and some flowers can reach a diameter of 40 mm.  Flowering times are from August to January, depending on rainfall. The plants often flower sporadically throughout the season if rainfall persists. Flowers open at midday and close again in the late afternoon, but on overcast days they tend to remain closed.

Species include: In the garden
Delosperma  is a genus with huge garden potential as the perennial plants require very little maintenance. Although they are succulent, Delosperma  plants originate from summer rainfall areas and therefore need plenty of water. Treating them like other succulents with limited watering will cause their untimely death.
 
The most commonly commercially available Delosperma  is D. cooperi, which forms low, dense mats. Coming from areas of high altitude, this species can withstand frost and produces large, bright pink flowers throughout the summer season.
 
A popular groundcover in the northern hemisphere is D. nubigenum, which also forms a low, dense mat and produces bright yellow flowers. As it is adapted to withstand the harsh winters of Lesotho, it can be planted out of doors in northern hemisphere gardens.