Rosy Paintbrush grows in the subalpine region of Colorado in full sun but in soils that stay moist all summer. It may be found in many color variations from nearly pure white to bicolors of pink and white and solid colors of salmon, pink, deep rose-red and almost purple. In my experience, this hemi-parasitic species does NOT need a host plant - just a constantly moist and fertile soil. It produces a lot of seed that germinate easily.