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Viburnum plicatum f. tomentosum

Photo Courtesy of Michael Dirr

Viburnum plicatum f. tomentosum 'Summer Snowflake'

A large shrub reaching up to 12' but only ½ as wide, giving it an upright habit, but still maintaining strong horizontally tiered branching.  Begins blooming in May, then reblooms sporadically throughout the summer.  Leaves, flowers, and fruit are smaller than the type.  Differentiated from 'Watanabe' by darker, more leathery leaves and a stronger tiered habit, but I fear the two have been mixed up in the trade and sold interchangeably.  Discovered in the wild in Japan in the early 1960's by R.F. Michaud of Alpenglow Gardens.  Introduced by the Canadian Ornamental Plant Foundation.  Zone 5

USDA Hardiness Zone:



12 Feet


6-7 Feet

Viburnum plicatum f. tomentosum 'Summer Snowflake' Characteristics

Growth Rate in the Garden

  • Moderate


  • Upright
  • Horizontally tiered

Soil Requirements

  • Moist, well drained
  • Acid

Sun Requirements

  • Full Sun to Part Shade
  • Shade tolerant

Flowering Season

  • Mid to late May
  • Sporadic throught the summer

Fragrant Flowers

  • No


  • Sparse
  • Red

Native to

  • Japan

Winter foliage

  • Deciduous