California gray rush. A strong gray-green or gray-blue selection of our native rush selected by Ed Carman of Los Gatos. Plants grow to 2’ with a stiff, vertical habit and display small clusters of dark brown flowers at the cylindrical leaf tips in late spring and summer. More heat and drought tolerant than the Juncus effusus selections, this cultivar is well suited to gardens throughout California. Hardy to 0F. Baja California north into Oregon.