Sempervivum wulfenii Hoppe ex Mert. & W.D.J.Koch
Hen and Chicks, Houseleek
Sempervivum wulfenii subsp. wulfenii, Sempervivum globiferum
Sempervivum wulfenii is a perennial plant forming basal rosettes (up to 4 inches/10 cm in diameter) of succulent leaves. They are oblong to spathulate, up to 1.2 inches (3 cm) long, up to 0.6 inch (1.5 cm) wide and grey-green with a purple-red base and darker tips. The offsets are produced on stout, woody stolons up to 4 inches (10 cm) long. The flowering stems is up to 10 inches (25 cm) tall, with flowers up to 1 inch (2.5 cm) across having 11 to 15 lemon-yellow petals.
USDA hardiness zone 4b to 9b: from −25 °F (−31.7 °C) to 25 °F (−3.9 °C).
How to Grow and Care
Sempervivum are not difficult to grow, provided they are not waterlogged and killed from excess watering. They can be easily grown outdoors and in containers, and they earned the name "Houseleeks" from their tendency to root on the roofs of houses. After the mother plant flowers, it will naturally die, but by this time, the plant has likely produced many offsets that will continue to grow. These are excellent for cold windows. Sempervivum earned their popular name "Hen and Chicks" from their growth habit. The mother plant, or hen, sends off numerous offsets, which will cluster around her base like chicks. These offsets can be easily repotted, or the plants can be left to form a clumping mat.
Repot as needed, preferably during the warm season. To repot a succulent, make sure the soil is dry before repotting, then gently remove the pot. Knock away the old soil from the roots, making sure to remove any rotted or dead roots in the process. Treat any cuts with a fungicide. Place the plant in its new pot and backfill with potting soil, spreading the roots out as you repot. Leave the plant dry for a week or so, then begin to water lightly to reduce the risk of root rot… – See more at: How to Grow and Care for Sempervivum.
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