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A very easily grown, creeping, mat-forming perennial providing all year round silvery-white, woolly foliage with thick carpet of pure white flowers in May and June.

184 in stock



SNOW IN SUMMER – CERASTIUM TOMENTOSUM . A very easily grown, creeping, mat-forming perennial providing all-year-round silvery-white, woolly foliage with a thick carpet of pure white flowers in May and June. An essential part of any rock garden and especially attractive on slopes or trailing over walls. Best in a sunny location with good drainage.

Cultivation Advice

  • Snow in Summer can be propagated by seeds or cuttings. Sow seeds indoors in early spring (March) or directly in the garden after the last frost, typically around late spring to early summer.
  • Choose a location with well-drained soil and ample sunlight.
  • Ensure the soil is well-draining, as Snow in Summer prefers sandy or loamy soil. Amend heavy clay soil with organic matter like compost or sand to improve drainage.
  • Aim for a slightly alkaline to neutral soil pH (around 6.0 to 7.0).
  • Sow the seeds on the soil surface or lightly cover them with a thin layer of soil. Maintain consistent moisture until germination occurs, usually within 10-14 days.
  • Space plants about 30-45cm apart to allow for their spreading growth habit.
  • Water newly planted Snow in Summer regularly to establish a strong root system. Once established, it becomes drought-tolerant and requires less frequent watering.
  • Water deeply when the soil feels dry, but avoid overwatering, which can cause root rot.
  • Snow in Summer doesn’t require heavy feeding. A balanced slow-release fertilizer applied in spring can support healthy growth.
  • Avoid over-fertilizing, as excessive nutrients can lead to leggy growth or fewer flowers
  • Mulch around the plants to suppress weed growth and retain moisture in the soil. Organic mulches like wood chips or straw work well.
  • Regularly remove weeds around Snow in Summer to prevent competition for nutrients.
  • Deadhead spent flowers to encourage continuous blooming and prevent self-seeding, as Snow in Summer can spread rapidly through self-seeding.
  • Shear the plant lightly after flowering to maintain a tidy appearance and encourage new growth.
  • Snow in Summer is generally resistant to pests and diseases. However, watch for aphids or powdery mildew, particularly in humid conditions.
  • Use organic pest control methods or prune affected parts to manage any issues.
  • Snow in Summer is generally hardy, but in colder regions, mulch around the base of the plants to protect the roots during winter.
  • Prune back dead foliage in early spring to encourage fresh growth.
  • Divide mature clumps every few years to rejuvenate the plant and control its spread. Divide in early spring or autumn, replanting healthy divisions in prepared soil.
  • Snow in Summer complements various plants in garden beds and borders. It pairs well with colorful flowering plants or acts as a contrast to dark-leaved specimens.
  • Snow in Summer is ideal for rock gardens, slopes, borders, or as ground cover due to its low-growing and spreading habit.
  • Its silver-gray foliage contrasts beautifully with other plants and its white flowers create a stunning visual impact.
  • Maintain a gardening journal noting planting dates, growth progress, and observations. Regularly inspect and maintain Snow in Summer for optimal health and appearance.
  • Overwatering can lead to root rot. Water when the top inch of soil is dry, providing a deep watering rather than frequent shallow watering.
  • Snow in Summer can spread rapidly through self-seeding. If you wish to control its spread, deadhead the spent flowers before they set seed.
  • Alternatively, allow it to naturalize in areas where its spreading habit is desired, creating beautiful drifts of white flowers.
  • Snow in Summer has a mild, pleasant fragrance and is considered deer-resistant, making it a good choice for gardens prone to deer browsing.

Additional information

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