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Holodiscus dumosus (photo courtesy of Denver Botanic Gardens)
Holodiscus dumosus (photo courtesy of Denver Botanic Gardens)

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Zones 1A, 1B, 2A, 2B, 3A, 3B, 10
Partial Sun
Regular WaterMinimal Water
Moderate, Minimal

Holodiscus dumosus

Mountain Spray, Rock Spiraea
Deciduous, Shrubs


The most widely sold species are Western natives that are similar in appearance to closely related Spiraea. Nodding, branched clusters of many small, creamy white flowers at the branch tips in late spring or early summer make quite a show and attract birds. Flowers age to tannish gold and remain attractive for a long time. Prune by thinning after the flowers have turned brown and the clusters have withered. Use these shrubs in native plantings or rural low-maintenance gardens where they can fend for themselves.

Holodiscus dumosus

Native to the eastern slopes of the Cascades of Oregon and to shady canyons in the Rockies from Wyoming southward. Generally smaller than H. discolor (may reach 15 ft. tall in good conditions), with narrower, shorter flower clusters (to 7 in. long). Coarsely toothed leaves less than 1 in. long.

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