Sempervivum heuffelii 'Worstiana': A dark, wide-leaved rosette of red to purple with a bright green heart. Its leaves are lined with a long fringe of cilia. The coloration deepens in cold seasons. S. heuffelii are super frost hardy and drought tolerant. They thrive outdoors year-round and hold vibrant colors through the seasons. To produce vegetative offsets, a mother plant will divide and develop into a neat cluster of new rosettes. These rosettes can be cut apart and transplanted (How to Propagate Heuffelii) or left to cluster. After several years, a rosette will bloom and die but its offsets will live on. Plant S. heuffelii outdoors in sunny locations with great drainage. Water in the spring through summer growing season if the soil is completely dry and protect from heavy rains and standing water, especially in winter. These hardy plants thrive through winter well under an insulating blanket of snow