Broad distribution in western North America within boreal, montane, wet temperate and cool mesothermal climates (Klinka, et al. 1995). Occurrence decreases with elevation. Scattered in coniferous forests of drier sites, common on water-receiving (alluvial, floodplain and seepage) sites.
Nitrogen rich soils (Klinka, et al. 1995).
Moist to dry.
Sun to shade.