Festuca

(Gramineae/Poaceae). Blue Fescue, Blue grass. Genus of 300-400 species of deciduous or evergreen, rhizomatous, clump and tufted-forming perennial grass. Found widely distributed in grassland, woodland edges and stream margins throughout temperate zones.
Grown chiefly for their intense fine blue-green to silvery-white narrow foliage which is flat, folded or rolled. Many are grown as turf or pasture grasses. Panicles of dense or loose branched spikelets borne from spring to summer. Good for border edging as foliage plants. Divide every 2-3 years in spring. Dislike winter sogginess and rich soils preferring a range of light situations. Shear over each spring to rejuvenate growth.