Lower right: A succulent native Oregonian, Sedum oreganum. Below: Becky wrapped a large, cold-hardy sempervivum Rosette around a small, smaller Sedum confusum and Delosperma Cooperi. Becky refers below to Sempervivum ‘Black’, which she has shown in dramatic contrast with chartreuse Sedum "Lemon Coral". All my books show design ideas and give care and cultivation for Sedum and Sempervivum. All you need is to get familiar with string of pearls caring techniques, including sun exposure and watering. They don't need to be cared for very often.