Sempervivum 'Black'

1 Quart Sempervivum arachnoidum 'Clairchin': Small, green rosettes with heavy white webbing that helps them tolerate full sun. Each spring, 'Clairchin' produces lots of new offsets on short stolons, developing into a tidy clump. This variety in particular benefits from a layer of gravel top dressing to act as a barrier between the soil and its leaves, which helps prevent rot. Height: 4 - 6" Spread: 10 - 12" Spacing: 8 - 12" Exposure: Full Sun