Houseleek, Hen-and-Chickens, Old Man and Woman, Roof House Leek 'Black Prince'

Sempervivum

Family
Crassulaceae (krass-yoo-LAY-see-ee)
Genus
Sempervivum (sem-per-VEE-vum)
Synonym
Sun Exposure
Full Sun
Foliage
Grown for foliage
Evergreen
Provides Winter Interest
This plant is resistant to deer
Height
under 6 in. (15 cm)
Spacing
3-6 in. (7-15 cm)
Hardiness
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
Danger
N/A
Bloom Color
White/Near White
Bloom Time
Late Spring/Early Summer
Mid Summer
Other Details
Category
Alpines and Rock Gardens
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color
Burgundy/Maroon
Dark/Black
Where to Grow
Can be grown as an annual
Suitable for growing in containers
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
Direct sow as soon as the ground can be worked
From seed; sow indoors before last frost
From seed; direct sow after last frost
Self-sows freely; deadhead if you do not want volunteer seedlings next season
This plant is monocarpic
Seed Collecting
Regional

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Gardener's Notes:

1
positive
0
neutral
0
negative
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O
Napier, WV (Zone 5b) | September 2006 | positive

This sempervivum averages about 2-21/2 inches in diameter and and unlike many semps does not change color at all. It maintains its deep, ...Read More

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