Richlawn EZ Green turf seed is a unique blend of grass seed because it is formulated specifically for the rocky mountain region where it is sold. It consists of bluegrass, perennial rye, and turf type fescue which respond favorably to the adverse soil and climatic conditions that are frequently found in the western US. In addition, this blend is drought tolerant, heat resistant, disease resistant and also contains endophytes for enhanced tolerance against insects that frequently attack turf grass. Perhaps most importantly of all is the ability of this turf blend to resist the incidence of NRS (necrotic ring spot), which is a serious problem on predominately bluegrass turf. This blend can be used with complete confidence to establish a healthy lush lawn that performs well from spring until fall.