Despite it’s common name, blue-eyed grass is not a grass.

Sisyrinchium plants all have clumps of stiff, upright, sword-shaped leaves held in a fan shape – just like most of their relatives in the iris family. However, the individual leaves are usually narrower than that of a typical iris plant, giving a grass-like appearance. They grow from thin rhizomes that gradually spread outward from the clump. Some species are evergreen, while many others — especially in colder areas — die back to the ground in winter. In spring or summer small flowers appear on spikes at or just above the foliage. Individual flowers emerge from a green spathe slightly wider than the supporting branch.