Common weed species growing in waste places, disturbed sites, pastures, prairies, and roadsides (Seyermark, 1963). Dry woods and open sites (Justice and Bell, 1968).
Coarse-textured and free draining (Justice and Bell, 1968; Haddock, 2000).
Dry to moderately dry soils (Douglas et al., 2002).
Full sun to partial shade (Seyermark, 1963).
Pioneer seral species on moister sites. Possible climax species on dry sites (USDA, 2002).
Infrequent occurrence on S.E. Vancouver Island in association with Lathyrus nevasensis, Cammassia quamash and Dodecatheon hendersonii (Specimen notes, University of Victoria Herbarium).