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Holodiscus discolor 'macrophylus'
This hardy species, tolerant of wide moisture regimes, soil types, and both sun and shade, is useful for low maintenance riparian plantings, reclamation of droughty and rocky or disturbed sites, and windbreaks. This broad adaptation and abundant midsummer
Min. USDA Hardiness Zone:
Adapted to course, medium and fine textured soils with pH 5.0 to 7.5. Prefers rocky/gravelly soils.
Low fertility requirements.
Med - Lg Shrub (usually >3' and never < 1.5')
Native from British Columbia to California and Idaho, found on well-drained to dry site, in sun and shade.
Western state native:
Leaves, simple, alternate, to 10 cm long, shallowly toothed or lobed, grayish green.
Predominant flower color:
Soft, creamy white, clusters (20 cm long) hang down, they turn brown and persist
Fall Color Description:
Reddish Leaves, not conspicuous
Winter Interest Description:
Older bark is dark red to brown or gray and exfoliating. Blooms dry and form brown seeds that persist thru the winter.
Native from British Columbia to California and Idaho, found on well-drained to dry site, in sun and shade (OSU Landscape). Rocky, north-facing slopes; moist, open woods; stream banks; below 7000 ft. (LBJ)
Used by Wildlife:
Browsed by cattle, deer, elk & dusky-footed wood rats. Common understory species that provides cover for numerous birds, small mammals & tree frogs.
Prune severely each year after flowering to maintain a loose, graceful shrub.
Long Term Care:
Other than occasional pruning to shape, there is little maintenance required. Oceanspray is also not prone to disease or pests, making it a congenial specimen for a sunny/woodland garden.
Largely free of insect pests though aphids have been reported.
Deer, Elk, Rabbits, Rats browse
Largely free of diseases although susceptible to fireblight (Erwinia amylovora) and a fungal leaf spot (Septogloeum sp.): https://pnwhandbooks.org/plantdisease/host-disease/ocean-spray-holodiscus-sp-leaf-spots . It is also a host of the root parasite, pin
Broad adaption to various environments makes it aa popular ornamental for highway plantings
As a poor competitor, oceanspray benefits from weed control when young. The fibrous root system requires well drained soil at least 12 in. deep. Consider supplemental irrigation during
establishment year or years with low rainfall. Cutting back mature st
OSU Landscape Profile:
LBJ Native Plant Database:
Missouri Botanical Garden Database:
Alternate Source 1:
Alternate Source 2:
George & Vickie Minor
Whistle Stop Farm & Flowers
High Desert Farms Nursery Sales
Green Thumb Tours:
VIsit the countryside of the Emerald Isle & Journey through Scotland and England
A portion of the proceeds will be donated to COMGA.
For more information, contact email@example.com
Join an OSU Master Gardener managed community garden this summer!
Put your name in the lottery to get a plot at either Hollinshead's or Discovery Park's community garden.
More information for: Discovery Park Garden
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