Cerastium "Tomentosum"

Cerastium tomentosum (Snow-in-Summer)
Snow-in-Summer is a low-growing, evergreen perennial prized for its silvery-gray, woolly foliage and abundant white star-shaped flowers that bloom in late spring. Its spreading habit makes it ideal for groundcover, rock gardens, borders, and erosion control on slopes.

Mature Size: 6–12 in tall, spreads 18–24 in
Sun Requirements: Full sun
USDA Zones: 3–7