Graystokes protects extensive old growth Sub-alpine fir and Engelmann spruce. The extensive complex of swamps, streams and wetland meadows mixed with forest is unique in the Southern Interior. Forest types range from mid-elevation to alpine and include extensive old growth Engelmann spruce, sub-alpine fir and Douglas fir. The Graystokes Plateau plays a key role in providing mid and late summer range for wildlife when the valley bottom is no longer productive. It also protects the upper reaches of the Mission Creek watershed for the City of Kelowna.
Within the protected area is habitat for moose, white-tailed deer and mule deer primarily from spring to fall. Also found in the area are lynx, wolverine, ptarmigan and grouse. The mountain caribou is one red-listed animal found here, as well as three blue-listed mammals which as the fisher, Townsend’s big-eared bat and grizzly bear. Also found in this park is one blue-listed plant species named pink agoseris.