This encrusted saxifrage makes a tight mat of very small compact rosettes which have silver-edged, dark-green leaves, and arching, dividing stems that bear sprays of pure white flowers in summer. It comes from the mountains of central and southern Europe, where it lives on limestone screes and rocks, and will do best if grown in tufa, but if in the open garden, it is best kept out of full sun.
Seeds can be sown at any time but are best sown in winter or early spring to benefit from a cold spell in the wet compost to break their dormancy. We advise covering seeds very thinly with sand or fine grit to about the depth of the seed size. If the seeds do not come up within 6 to 12 weeks the damp seed tray can be given cold treatment in a fridge for about four weeks. They may still take very many months to appear, so please never discard the pot or tray.