One of my favourite smaller succulents with narrow, triangular, deep green leaves and slightly raised white bands giving it an almost zebra like pattern. In summer slender stems appear above the foliage bearing tubular bell shaped white flowers. Maximum height is about 10cm with a similar spread but over time forms good sized clumps as it regularly produces pups around the base.
Usually grown as a very easy going houseplant requiring nothing more than a bright position and the odd little drink from time to time but it is also surprisingly hardy. When we say hardy we mean it is cold tolerant but only if kept dry and given sharply drained soil. Our own plants at home are left outside all winter but under an open sided covered area. This keeps them perfectly dry for the winter but they do experience cold and have gone down to -5 without damage. Other things to try which we have found successful is to turn the pot on it’s side for the winter keeping excess moisture away from the roots and allowing rain water to drain from the crown rather than sitting in it. Covering with a cloche raised up on some bricks to allow air circulation also works well.