Two species are prominent in the nursery trade; Delosperma cooperi has purple flowers and silver-green succulent foliage, while Delosperma nubigenum has yellow flowers; D. cooperi is more heat and drought tolerant than D. nubigenum, but is the least cold hardy of the two species. Good as groundcovers for hot dry sites and in rock gardens.
Regions that intersect these hardiness zones: Region A - Panhandle and High Plains• Region B - North and Central Texas• Region C - Northeast and East Texas• Region D - West Texas• Region E - Upper Rio Grande• Region F - Hill Country and Central Coast• Region G - Southeast Texas• Region H - Rio Grande Valley
Click image for enlarged map of USDA Hardiness Zones
Water only during drought; nearly any soil as long as it is well drained.
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A Special Note about Cool Season Annuals
Cool season annuals typically are planted in the fall or early winter and flower in early spring under moderate temperatures. This group of plant materials includes: pansies,
snapdragons, violas, dianthus, flowering cabbage/kale, etc. Because cool season annuals flower in the spring when conditions are mild, most have limited heat tolerance.
As a result cool season annuals do not receive a high Earth–Kind® index despite their outstanding landscape qualities.