Abundant, very showy blue, to violet colored flowers develop at the end of thin stems that are up to 18" tall. Though the tops of the stems are divided, only one flower will bloom at a time on each stem. The common names are somewhat of a misnomer; though its foliage is grass-like, this is not a grass, but rather a member of the Iris family. The foliage will turn blue-green with more sun, is long lasting and can be considered semi-evergreen.

Sisyrinchium angustifolium makes an effective ground cover for the front of a sunny perennial flower bed. It will tolerate some shade and will grow well in transitional areas, however the blooms will not be as profuse. It is a moisture loving species, but is susceptible to root rot. Best in average to poor, well-drained soil. Bloom times will vary between late spring and early summer, and last for about a month. Plants can be cut back after flowering to avoid unwanted seeding, and to encourage new leaf growth and a tidy appearance. Both very cold hardy, and heat tolerant. [sourced from izelplants.com]