Yo Yo Snow-in-Summer

Yo Yo Snow-in-Summer (Cerastium tomentosum 'Yo Yo') is a showstopping late-spring flowering groundcover that delivers one of the most dramatic and purely joyful seasonal displays in the ornamental plant world — a dense, low carpet of intensely silver-white woolly foliage smothered wall-to-wall in pure white, five-petaled star flowers that genuinely create the effect of a fresh late-season snowfall blanketing the garden. The 'Yo Yo' selection is prized for its especially compact, controlled habit compared to the more rampant spreading of the standard species, making it a far more manageable and garden-friendly choice for borders, rock gardens, and wall edges where its spectacular bloom display can be enjoyed without the concern of aggressive takeover.

Grown from Professional Grade root systems, Yo Yo Snow-in-Summer earns its keep not only during its spectacular bloom flush but as a year-round silver foliage accent of genuine ornamental merit. The persistently silvery-white woolly leaves provide a luminous, cool-toned groundcover carpet throughout all four seasons, making this plant a valuable year-round contributor to the dry, sunny garden. Its exceptional drought tolerance, deer resistance, and ease of culture make it one of the most reliable and carefree flowering groundcovers available for sunny, well-drained garden situations.

Why You'll Love It

• Spectacular Snow-White Spring Bloom Carpet: Dense, wall-to-wall pure white star flowers smother the silver foliage mat in late spring in one of the most vivid and purely celebratory floral displays of the garden season — a genuinely breathtaking effect that stops visitors in their tracks and earns this plant its beloved common name.
• Year-Round Silver Woolly Foliage: Persistently silver-white, softly woolly leaves provide a luminous, cool-toned foliage carpet through all four seasons — a valuable year-round ornamental presence that remains attractive and structurally appealing long after the spectacular bloom period has passed.
• Compact Controlled Yo Yo Habit: The 'Yo Yo' selection offers a significantly more contained, tidy spreading habit than standard Cerastium tomentosum — a garden-friendly choice that delivers the full bloom and foliage impact without the invasive spreading tendency of the straight species.
• Exceptional Drought & Heat Tolerance: Thrives in the hot, dry, lean conditions of rock gardens, sunny slopes, and xeriscape borders — extremely drought-resilient once established and performing reliably in the challenging combination of full sun and poor, fast-draining soil.
• Rock Garden & Wall Cascade Icon: The quintessential rock garden flowering groundcover — cascading over ledges, wall tops, and raised bed edges in a flowing silver-and-white display that defines the classic alpine and cottage rock garden aesthetic at its very best.

These 4" healthy live plants thrive in full sun in sharply drained, lean to sandy soil. Excellent drainage is absolutely critical — Cerastium tomentosum will rot quickly in heavy clay, wet, or poorly drained conditions, particularly in summer. Water sparingly to establish, then reduce to minimal supplemental irrigation. Best suited for USDA Hardiness Zones 3–7; note that performance declines in hot, humid climates (Zones 8+) where heat and humidity combined with moisture can cause crown rot. Mature height in bloom: 6–10 inches; spread: 12–24 inches. Blooms late spring. Trim back by one-half immediately after blooming to maintain a compact, tidy habit, refresh the silver foliage mat, and prevent the plant from becoming overly open and woody in the center.