Delosperma cooperi in flowerNot all my succulent plants live in pots. I have devoted a small section of Cactus Hill to a planting of winter hardy cacti and other succulents. The planting is located on the south side of a gentle hill. The existing soil was a sandy loam, quite good as a starting point for a succulent. I worked in liberal amounts of coarse sand to improve the drainage, and brought in a lot of large rocks for landscape aesthetics. We have no rocks in Southern Maryland, only gravel.
One of the most successful succulents in the winter hardy planting is Delosperma cooperi (shown above). It is native to South Africa and is one of the most cold hardy succulents. Plants in my planting have easily survived low temperatures of 5 degrees F. When happy D. cooperi makes a wide spreading, attractive ground cover, and is covered with inch wide flowers in late spring and early summer. I'm going to try and add several more delospermas to the planting this year, and when that occurs you'll read about it here.