Orostachys malacophylla (Pall.) Fisch.
Cotyledon malacophylla, Orostachys malacophylla subsp. malacophylla, Sedum malacophyllum, Umbilicus malacophyllus
Orostachys malacophylla is a succulent plant that forms rosettes of green to pale green leaves. The rosettes grow up to 6 inches (15 cm) in diameter, slowly offsetting to form dense ground cover clumps. Leaves are up to 2.8 inches (7 cm) long and up to 1.2 inches (3 cm) wide. In summer, the rosettes rise like an erupting volcano as they burst into a flower. The plant goes dormant in the winter, losing all of its aboveground foliage, but returns in full force in the spring.
USDA hardiness zones 5a to 8b: from −20 °F (−28.9 °C) to 20 °F (−6.7 °C).
How to Grow and Care
As with most similar genera of the Crassulaceae family, this plant can survive in fairly poor soil so long as it is well-draining. This genera is very cold-hardy and can survive temperatures of -30 °F (-34 °C). Allow soil to dry to the touch between waterings and avoid getting water on the rosettes. Orostachys actively in spring and summer. It requires some bright light and does not tolerate high humidity well.
Orostachys self-propagates through offshoots, and at a given time, one plant will form a dense mat of many. Propagation is primarily through offset separation.
To separate an offset, remove soil from the offset's base to find the stolon (thick root which attaches the pup to the mother plant). It is best to use an offset that has already established some roots of its own. Cut the stolon close to the pup (to discourage roots growing from the stolon). Place the offset into a small pot with well-draining, sandy soil. Do not water until new growth is noted.
Learn more at How to Grow and Care for Orostachys.
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