Sempervivum heuffelii Schott
Jovibarba heuffelii, Diopogon heuffelii, Diopogon stramineus, Diopogon velenovskyi, Jovibarba velenovskyi, Sempervivum brassaii, Sempervivum kopaonikense, Sempervivum patens, Sempervivum stramineum, Sempervivum transsilvanicum, Sempervivum velenovskyi
Sempervivum heuffelii is a perennial herb forming basal rosettes of succulent leaves that are ciliate along the margins. Flowering stalks are erect, succulent, up to 8 inches (20 cm) tall, bearing a cyme of up to 40 white to yellowish flowers. Each flower is up to 2 inches (5 cm) in diameter, with 6 to 7 fringed petals. Each plant is semelparous, meaning that it flowers only once, dying after its fruits mature.
USDA hardiness zone 4a to 9b: from −30 °F (−34.4 °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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