Range and Habitat in Illinois
Snow-on-the-Mountain naturalizes occasionally in scattered counties across Illinois, particularly in the NE and west-central regions of the state. This plant is adventive from an area that lies west of Illinois, where it is native to the Great Plains. It also escapes from cultivation occasionally. Habitats include dry upland areas of prairies, hill prairies, areas along railroads and roadsides, pastures and fallow fields, dumps and landfills, and waste areas. The seeds often survive earth-moving operations and can germinate wherever the soil is dumped. Snow-on-the-Mountain is often grown in gardens because of its attractive foliage. In the Great Plains states, this species is regarded as a pest because it has a tendency to spread in pastures. In Illinois, Snow-on-the-Mountain appears to be less aggressive and persistent, more often occurring in waste ground and other highly disturbed areas.