Neat little plants that are often taken for pebbles having mainly white or yellow blooms. During resting period keep dry. Height: 2.5-10cm (1-4in).
Sow from mid winter to late summer in a free draining cactus compost, just covering the seed with silver sand. Seal in a polythene bag or cover with glass until germination which can take from 2-12 weeks at 18-27C (65-80F).
They like good ventilation and lots of light but not direct sunshine. In the winter the plants 'hibernate', the old leaves dry up and new ones develop inside and emerge in late spring. No water should be given at all throughout the winter and early spring.