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NSN seed logoIf data is available, this is where you find Ecoregion Descriptions, Plant Communities of that ecoregion, and Species Lists/Recommendations for both.  If you know the community types at your project site, use community recommendations as the species will be more appropriate and more specifically geared to your site.  
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Eastern Cascade Slopes and Foothills Ecoregion

The Eastern Cascade Slopes and Foothills ecoregion is in the rainshadow of the Cascade Mountains. Its climate exhibits greater temperature extremes and less precipitation than ecoregions to the west. Open forests of ponderosa pine and some lodgepole pine distinguish this region from the higher ecoregions to the west where fir and hemlock forests are common, and the lower dryer ecoregions to the east where shrubs and grasslands are predominant. The vegetation is adapted to the prevailing dry continental climate and is highly susceptible to wildfire. Volcanic cones and buttes are common in much of the region.
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Eastern Cascade Slopes and Foothills Plant Communities


In the Intermountain area, there are over 20 million acres (8.1 million ha) of aspen scattered from upper foothill ranges to mountaintops and high plateaus. The majority of the aspen occurs at middle elevations and span a broad range of environmental conditions. Annual precipitation within the Intermountain aspen zone ranges from 16 to 40 inches (400 to 1,000 mm). Aspen can be found growing in association with tall forbs, ponderosa pine, lodgepole pine, spruce-fir, mountain brush, open parks of mountain big sagebrush, snowberry and chokecherry, and on the margin of grasslands. Aspen trees are found along moist streams as well as on dry ridges and southerly exposures, on talus slopes, and in deep to shallow soils of various origins.
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Inland saltgrass

Inland saltgrass has gained control on many dry to semiwet meadows in upland and lowland areas where alkalinity is appreciable and where the early growing grasses, sedges, forbs, and shrubs have been depleted by grazing. Soils are generally heavy with high water tables at least during some period of the year. Some areas may have standing or running water for short periods. While these meadows are relatively small, they usually have a much higher potential for livestock forage production and as wildlife habitat than when dominated by saltgrass. Improvements may benefit wildlife and allow for grazing at different and longer seasons, but revegetation projects should be carefully evaluated before treatments begin.
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Mountain big sagebrush

Throughout the Intermountain West, mountain big sagebrush is found at elevations from 3,500 to 9,800 ft (1,060 to 3,000 m) and occurs from foothills to subalpine zones. Annual precipitation ranges from 12 to 30 inches (300 to 760 mm). Soils on which mountain big sagebrush grows range from slightly acid to slightly alkaline and are generally well drained. Soil moisture is usually favorable throughout the growing season. A large number of grass, forb, and shrub species grow in association with this shrub and usually produce an abundance of forage. Open stands with good, diverse understory are essential to sage-grouse and must be used in treatment projects to maintain sufficient shrub density and cover for sage-grouse. It is essential that desirable understory species and woody species associated with mountain big sagebrush be retained or reestablished as part of the revegetation effort.
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Ponderosa pine

In the Intermountain West, ponderosa pine occurs at approximately the same elevation and on sites with the same annual precipitation as does the mountain brush type. Mountain brush types are found on heavier soils than ponderosa pine, which prefers well-drained, coarser textured soils, with soil pH close to neutral, and more summer precipitation.
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Subalpine herblands and aspen openings are usually very productive and important sites. They provide forage and cover, serve as important watersheds, and provide recreation opportunities. Successful rehabilitation can markedly increase the value of these ranges for wildlife, livestock, and watershed protection. Some subalpine areas are relatively small, but they can be very productive. These areas are important summer ranges for sheep and cattle, mule deer, elk, moose, bear, and several species of grouse. Elevation of subalpine herblands varies between 7,000 and 12,000 ft (2,150 and 3,600 m). Most sites occur above 7,800 ft (2,400 m). Because these high elevation areas receive 20 to 60 inches (500 to 1,500 mm) of precipitation annually, they are important watersheds. Within the subalpine communities of the Intermountain West, common grasses include Letterman needlegrass, slender wheatgrass, mountain brome, and spike trisetum. Some important forbs are Louisiana sage, western yarrow, penstemons, geraniums, ligusticum, asters, lupine, and bluebell. Principal shrubs include currants, snowberry, low rabbitbrush, and subalpine big sagebrush. Widespread tree species are Engelmann spruce, subalpine fir, and aspen. Soils can be shallow and rocky; however, deep fertile soils are most common.
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