Cerastium tomentosum 'Snow in Summer' Seeds

A Cascade of White That Earns Its Name

When Cerastium tomentosum blooms, it does exactly what its common name promises — a breathtaking blanket of pure white flowers smothers the silver-grey foliage so completely that the plant virtually disappears beneath them. Commonly known as Snow in Summer, this vigorous, mat-forming perennial is one of the most striking groundcovers you can grow. Whether it's spilling over a stone wall, softening the edge of a sunny border, or filling a dry, difficult spot where little else thrives, Snow in Summer delivers a spectacular show every season with minimal fuss.

Why Gardeners Love It

• ❄️ Stunning white bloom display — masses of small, starry white flowers completely cover the plant in late spring and early summer
• 🪪 Beautiful silver-grey foliage — soft, woolly leaves provide year-round texture and contrast in the border
• 🌿 Excellent groundcover — spreads to form a dense, weed-suppressing mat in sunny, well-drained spots
• 🧱 Perfect for walls and edges — cascades beautifully over retaining walls, raised beds, and border edges
• 🐝 Pollinator friendly — the white blooms attract bees and small beneficial insects
• 🌵 Drought tolerant once established — thrives in poor, dry soils where other plants struggle

Growing Tips for New Zealand

Sow seeds indoors 6–8 weeks before the last frost, or direct sow in spring or autumn in warmer NZ regions. Unlike many tiny seeds, Cerastium benefits from a light covering of seed-raising mix after sowing — press down gently and keep consistently moist until germination. Germination can be slow and a little unpredictable, so patience pays off. Transplant to a sunny, open position with excellent drainage — Cerastium dislikes wet or humid conditions and is prone to rot in heavy soils. Space plants 30–45 cm apart and trim back hard after flowering to keep plants compact and tidy. Thrives in coastal, rocky, and dry garden conditions.

What's in the Packet

Each packet contains 50 seeds of Cerastium tomentosum 'Snow in Summer', with sowing and growing instructions included.

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