About
A dwarf perennial forming a cushion of small rosettes of tiny narrow leaves, with large white flowers held above the foliage, in spring.
About the genus
Saxifraga can be annuals, biennials, evergreen or herbaceous perennials, mostly mat-forming in habit, with simple or palmately lobed leaves and starry or rounded flowers which may be solitary of in panicles or cymes
Growing conditions
SunlightFull sun, Partial shade
Soil typeChalk, Loam
Soil pHAlkaline, Neutral
Soil moistureWell-drained
AspectWest-facing, South-facing, East-facing
ExposureExposed, Sheltered
UK hardinessH5
Plant details
Plant typeAlpine Rockery
HabitMatforming
FoliageEvergreen
HeightUp to 10 cm
Spread0-0.1 metre
Time to full height2-5 years
Suggested usesGravel garden, Rock garden, Patio and container plants
Care notes
CultivationGrow in a moderately fertile, very well-drained, neutral to alkaline soil in light shade. A rock garden or crevice garden is ideal so as to keep the roots cool. Troughs, sinks or an alpine house are also ideal places in which to grow 'Cumulus'. Use shallow pans of two parts peat-free John Innes No 1 compost and one part limestone chippings
PruningNo pruning required. Deadhead where required
PropagationPropagate by seed in autumn in containers in an open frame (don't expect cultivars to come true from seed). Individual rosettes can be detached in spring as root cuttings in late spring or early summer
Pest resistanceAphids, glasshouse red spider mite and vine weevil may be problematic
Disease resistanceGenerally disease-free