Ceanothus integerrimus

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USDA Hardiness zone: Zn6a -5º to -10ºF

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Ceanothus integerrimus

Deerbrush is a widespread species in Oregon favoring areas with extensive summer drought. Its found primarily in the southern 1/3 of southwest Oregon  and the north central part of the state into southern Washington. A small population exists on Skinners Butte in Eugene.  Wide spreading semi-deciduous to deciduous shrub with young stems that remain green. Locally it is most common from about Dog mountain in the Gorge to the east and is extensive throughout Hood River and Wasco counties. This is an ideal shrub for revegetation areas, it naturally responds to fire, in fact the seeds must be exposed to boiling water to germinate. This species comes in a very wide range of colors. from clear white to deep blue and occasional shades of lilac pink. It may only be raised from seed so flower color is naturally variable. The plumes of flowers are large and airy displaying the color of the flower vividly. The most common flower color in Oregon is light blue. In late May and June a wonderful wildflower drive is up the Hood River Valley. These frothy blue, to pink to white flowers literally foam out from under native oaks and conifers. Its very conspicuous at that time too on the Rowena plateau. A word of warning not only does this shrub encourage deer browse it is also the unfortunate home of many deer ticks. Photograph carefully. Here it is found with such associates as Holodiscus, Toxicodendron, Symphoricarpos and Arctostaphylos.  This brushy plant derives its name from the familiar sight of black tail deer breast height chomping away in extensive groves. Not a long lived shrub 10-15 years but it fixes nitrogen efficiently and improves the soil for successors. Full sun to very light shade, best on a dry slope. Water to establish then only what falls from the sky in subsequent years. Very hardy to cold enduring subzero temperatures. Beautiful pollinator heaven in bloom. To 3-7′ tall and as wide in several years. Oregon native plant.

Photo Credit: Dii Mazuz, Bruce Hegna

Photo: Bruce Hegna
Photo: Dii Mazuz
Photo: Di Mazuz Ceanothus integerrimus is a fire adapted species. It appears after fires and fixes nitrogen one step in replenishing damaged soils.

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