large wild iris (dietes grandiflora) blooms are white marked with yellow and violet : (pix sanjiv shukla)

dietes grandiflora fortnight lily large wild iris african fairy family iridaceae rhizomatous perennial plant long rigid swordlike green leaves horticulture south africa garden beautification commercial premises roadsides blooms white yellow violet dark markings base tepal abundance summer rain flowers capsules brown seeds dispersed profusion dappled shade full sun grow favourable conditions clumps drought frost hardy popular planting environment weed australia