succulent plant sempervivum calcareum - succulent in rock garden

succulent sempervivum calcareum crassulaceae perennial hen houseleek rosette green redtipped rocky garden drought frost hardy alpine matforming propagation offsets drainage xerophyte landscaping dry ornamental texture geometry foliage resilience stonecrop flowering symmetry groundcover nature arid succulentgarden rockgarden decor spiky evergreen aesthetic cluster fleshy pointed outdoors plant