Black is a hardy hens and chicks with green centers and deep blackish-red tips, giving each rosette a dramatic, dark edge. It is a great choice for gravelly, poor soils where little else will grow.
The central hen produces a ring of chicks that fill in over time, and you can pull off a few to plant elsewhere at any time. Use it in stone wall crevices, between pavers, in rock gardens or in shallow containers.
What it looks like
Tight, symmetrical rosettes 2 to 4 inches across of thick, pointed, fleshy leaves; the center of each rosette is green, and the outer half of each leaf darkens to a deep black-red at the tip. Small offset rosettes cluster around the larger one. Rarely, a rosette sends up a thick stalk with small star-shaped flowers. The plant forms a low cluster 4 to 6 inches tall and 6 to 8 inches wide. A group looks like dark-edged green stars set in gravel.
Growing it with lavender
Hens and chicks love the same lean, gravelly, sun-baked ground as lavender, so tuck them along the edge of a lavender bed, between stones or in gravel mulch for a low, sculptural contrast to the upright lavender.
Care
Grow in full sun in poor to average soil with sharp drainage, such as gravel, sandy soil, rock crevices or a shallow container; it needs very little water and rots in wet soil. Hardy in zones 3-8; a rosette that flowers will die afterward, so pull it out and let the surrounding chicks fill the gap, and replant extra chicks anywhere.
At a glance
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Botanical name: Sempervivum
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Flower color: Occasional star-shaped flowers on a short stalk
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Foliage: Green centers with black-red tips
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Growth habit: Low rosettes spreading by offsets
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Mature size: 4–6 in tall × 6–8 in wide
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USDA hardiness zones: 3–8
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Light: full sun
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Deer resistance: Resistant
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Pollinator value: Fair
Sizes and shipping
Dormant bare-root plant, sold in boxes of 25 per variety (order in multiples of 25). Bare-root plants ship or are picked up March 1–May 31 only. They are soil-free, so they may ship to every state in that window. Dormant plants often show little or no top growth on arrival; plant or heel them in promptly.