Vernally moist, often shady, mossy ledges, rocky slopes, mostly at low elevations (Pojar and MacKinnon,1994). Vancouver Island, Gulf Islands and lower Fraser Drainage (Douglas et al., 2000).
Well-drained soils (Maslovat, personal communication)
Prefers acidic soils (Maslovat, personal communication)
Seasonally moist to wet, xeric through summer (Hitchcock et al, 1961).
Full sun to part shade (Pojar and MacKinnon, 1994).
Found in moister Garry oak ecosystems (Maslovat, personal communication)