Where to buy seeds
Some links are affiliate links — Verdantly may earn a commission at no cost to you. Learn more.
Biebersteinii White Cerastium, also known as Snow in Summer, is a low-growing perennial that blankets itself in pristine white blooms from late spring through fall. Hardy in zones 3 through 8, this spreading wildflower reaches just 6 to 12 inches tall and thrives in full sun with remarkable tolerance for cold, drought, and high altitude conditions. It reaches maturity in 60 to 90 days and spreads via its prostrate growth habit, making it equally at home tumbling over rock garden edges or anchoring a border.
Full Sun
Low
3-8
12in H x ?in W
—
Moderate
Hover over chart points for details
This perennial displays an exceptional spreading habit that makes it invaluable for filling gaps in challenging spots where other plants struggle. The continuous white blooms attract pollinators throughout the growing season while its hardy constitution means you can plant it and largely let it flourish with minimal fussing. Deer leave it alone, and it handles the temperature swings and dry spells of mountain gardens and exposed sites with the grace of a plant born to those conditions.
Cerastium biebersteinii thrives as a ground cover in rock gardens, edging borders, and cascading over stone walls where its delicate white flowers create a soft, naturalistic effect. Its spreading habit and low stature make it especially suited to areas where you need to suppress weeds and stabilize soil on slopes or in crevices. The continuous bloom from late spring through fall provides extended color in alpine gardens and xeric landscapes.
No timeline data available yet for this variety.
Transplant in spring or fall. Space plants 12 inches apart with 18 inches between rows. This variety establishes quickly in full sun locations.
Light deadheading of spent flowers encourages continued blooming through the season, though the plant will flower prolifically even without intervention. Cut back in early spring if the plant becomes overly sprawling or to maintain crisp edges along garden borders.
Enter your ZIP code to see a personalized growing calendar for this plant.