The flowers of desert phlox range in color from white to deep pink, with every shade in-between. NPS photo. Phone: Desert phlox (Phlox austromontana) can be found growing among shrubs in the sagebrush grassland habitats in Grand Canyon. With five-petaled flowers ranging in color from white to a deep pink, they grow in dense clusters and bloom on the North and South Rims from May to June and are commonly seen on the corridor trails within the canyon. Wildflowers - Grand Canyon National Park (U.S. National Park Service)