In winter when exposed to frost the outer leaves will die and the core of the rosette will curl into a tight ball and stay that way until...Read More opening up in spring. They look pretty ratty compared to semperviviums in winter, but don't get burned to the ground like sedums. This species grows best in cool weather and appears dormant mid-summer, it grows all winter long when protected from frost in a greenhouse, even with lows in the 20's. Frost appears to trigger them to curl up and go dormant.
Orostachys spinosa produces small numbers of offsets at the base of the plant, eventually forming tight clusters of plants. The offsets are not attached very strongly and root readily.
Orostachys are monocarpic (a rosette dies in flowering), so it is important to keep plants and offsets of different ages to avoid losing them to flowering.
In winter when exposed to frost the outer leaves will die and the core of the rosette will curl into a tight ball and stay that way until...Read More