Do not use them above 6,500 feet elevation. Bermudagrass also is a warm-season grass and should be planted by itself. It performs best in the southeastern and warmer western areas of Colorado but can be used successfully in most parts of Colorado below 6,500 feet elevation. Bromegrass, tall fescue and crested wheatgrass can be planted with each other or alone. They do not blend well with the finer-textured grasses like ryegrass or bluegrass.
Red fescue provides a dark green, fine-textured lawn and prefers drier soils.
Alkaligrass looks like red fescue but does best where it is well-watered. The newly developed cultivars generally are darker green, have finer and smoother leaves, and are more tolerant of shade than older cultivars. The new turf-types include Mustang, Bonanza, Jaguar II, Rebel Jr., Rebel II, Apache, Olympic, Falcon, Maverick II, Arid, Crossfire and Shortstop. Grasses with moderate to good salt tolerance are available in some nurseries and Garden centers. If a mix contains grasses of different salt tolerance, grasses unable to tolerate the salts in the soil will die out.