San Juan County, located in the southeast corner of the state, has a dry-farm area of approximately 600,000 acres extending from Monticello 26 miles south to Blanding and 6 miles north to Peter's Hill and stretching from the Blue Mountains east 30 miles to the Colorado line. One-fourth to one-third of this area is covered with timber consisting mainly of pinion pine, oak brush, and juniper commonly called cedar. Both the juniper and pinion are of value as fuel and building material, and the juniper has an additional value for fence posts. While small areas have been cleared of timber for farm purposes with favorable results in respect to yield of crops, most of the tillable land was or is now in sagebrush. The sagebrush consists of two types: the common type (Artemesia tridentata) and a dwarf brush, compact, and dark in color. The latter type is found growing usually on the poorer soils, shallow in depth, and of a heavy, clayey type. Bluestem wheat grass, another native plant of this area commonly found growing in association with sagebrush, is of economic value in that it serves as summer pasturage for stock.
Eagar, James H. and Bracken, A. F., "Bulletin No. 230 - San Juan County Experimental Farm: Progress Report, 1925-30, Inclusive" (1931). UAES Bulletins. Paper 188.