Sisyrinchium palmifolium

The brown-eyed girls are gonna have to move out of the way because here comes the yellow-eyed grass, that isn't a grass, nor does it have the power of sight. What it does have is clumps of evergreen bladed blue-green foliage topped with bright golden stars that open with the coming of afternoon and evening, a well-timed treat for that garden party stroll. South American but hardy to zone 7 and happy in a nice sunny spot which mirrors its cheery nature.