The Stansbury Mountains occupy a biological transition zone from the Great Basin to the Rocky Mountains. Much of the wilderness is alpine, with open basins and barren rocky ridges. From December through May, you can expect the upper elevations to be covered in snow. Douglas-fir, alpine fir and aspen are commonly found growing on high north-facing slopes. Juniper, mountain brush, sagebrush, and grass cover much of the lower terrain. Cattle are still allowed to graze on range allotments in portions of the area.