Snow-in-summer is a low, spreading, silver-grey perennial that forms dense mats covered in small white star-shaped flowers in late spring. It thrives in full sun and poor, gritty, well-drained soil, where it is very easy to grow.
Family
Caryophyllaceae (Pink & carnation family)
Grows as
Perennial
Light
Full sun
Water
Water sparingly and let the soil dry out between waterings; it resents wet, soggy ground.
Soil
Poor, gritty, free-draining soil or rock garden mix.
Temperature
Hardy in cold winters; tolerates about -20 °C and is best kept cool in summer heat.
How easy
Easy
Native range
Corse, Sicilia, Italy (C. & S. Appennini)
Climate
temperate
About
Cerastium tomentosum (snow-in-summer) is an herbaceous flowering plant and a member of the family Caryophyllaceae. It is generally distinguished from other species of its genus by "tomentose" or felty foliage. It is a low, spreading perennial native to the alpine regions of central and southern Italy. The stems and leaves are silvery-grey, whilst the flowers are star-like, white and about 15 mm (0.59 in) across.
How to grow it
It has proven popular as a cultivated ornamental and can be found in gardens the world over. It is a horticultural plant, perennial, rocky, forming dense silver carpets. This plant is not very demanding: it likes a poor soil, rich in gravel, well drained, in a sunny place. It spreads easily by its rhizomes.
Where it grows
It is native to Italy, from the central and southern Apennine Mountains to Sicily. It has naturalised elsewhere in Europe and in North America, where it is often subspontaneous.
Text excerpted from the Wikipedia article Cerastium tomentosum by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.