Forms a carpet of silvery foliage and white flowers. Position: full sun Soil: gritty, humus-rich, sharply-drained, neutral to alkaline soil Rate of growth: fast Flowering period: May to July Hardiness: fully hardy Thriving in those hot, sun-baked spots where little else will grow, this creeping groundcover will soon form a dense mat of silver foliage, which from late spring to midsummer will be studded with a profusion of white flowers. Cerastium tomentosum is a wonderful addition to alpine beds, dry slopes or gravel gardens, but it is also useful for filling gaps at the front of sun-drenched borders. Garden care: Cut back or divide overly large clumps in spring and avoid excessive moisture - particularly during the winter months.