Cloud Cover is a silvery groundcover that wakes up early in spring and spreads into a soft carpet. In late spring it disappears under a blanket of pure white, star-shaped flowers.
After bloom, the dense silver foliage keeps its shape and color through summer and into late fall. It stays just 4 to 6 inches tall and spreads over 2 feet wide, compact with thick leaves and large flowers, and it thrives on slopes, in rock gardens, along stone walls and in dry, sunny spots.
What it looks like
A low, dense, spreading mat about 4 to 6 inches tall and 26 to 32 inches wide. Leaves are narrow, about three-quarters of an inch long, thick and woolly, in an intense silver-white that reads almost frosted. In late spring, short stems hold masses of star-shaped white flowers about three-quarters of an inch across, each with five notched petals and a small yellow-green center. At peak bloom the silver carpet is completely covered in bright white flowers like a layer of fresh snow.
Growing it with lavender
It loves the same full sun and lean, gravelly soil as lavender, and its silver mat and white late-spring flowers make a bright, low carpet in front of lavender before lavender begins to bloom.
Care
Plant in full sun in lean to average soil with sharp drainage; it handles drought well once established and dislikes wet feet. Hardy in zones 3-7. Shear lightly after flowering to keep the mat dense and tidy.
At a glance
-
Botanical name: Cerastium tomentosum
-
Flower color: Pure white
-
Foliage: Silver-white
-
Growth habit: Low, spreading mat
-
Mature size: 4–6 in tall × 26–32 in wide
-
USDA hardiness zones: 3–7
-
Light: full sun
-
Bloom start: Late-May
-
Peak bloom: Early-June
-
Bloom pattern: Single Flush
-
Deer resistance: Resistant
-
Pollinator value: Fair
Sizes and shipping
One full 72-cell plug tray: 72 young starter plugs of this variety (cells about 1⅓ in. wide × 2½ in. deep), rooted and ready to pot up into quarts or gallons. Best for growers and nurseries. Potted plants and plug trays ship during our live-plant seasons, March 1–May 31 and October 1–November 30; June through September is local pickup only. Plugs, potted plants and trays do not ship to AZ, CA, HI, ID, NV, OR, UT or WA.