Plant types and subtypes: Perennials, Ground Covers
Light Requirements: sun, part-sun, part-shade
Water Use: medium
Soil Moisture: moist
Soil Description: acid, neutral, average, poor, loam, clay, sand
Bloom Time: April, May, June, July
Bloom Color: violet, lilac, lavender, blue
Leaf Color: green, blue-green
Hardiness Zone: 3, 4, 5, 6, 7, 8, 9, 10
Additional Tags: attracts bees, clumping, colonizing, cottage garden plant, cut flowers, medicinal, naturalizing, ornamental foliage, rock garden plant, semi-deciduous
Pricing & Availability
Sisyrinchium angustifoliumAlso known as:
narrowleaf blue-eyed grass,
Bermuda blue-eyed grass,
stout blue-eyed grass
Sisyrinchium bermudiana, Sisyrinchium graminoides
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. Do not mulch. Mature clumps will require diving every 2 to 3 years to avoid over crowding and maintain a vigorous flower production. 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. Zones 3-10
Easily propagated by clump division and root cuttings, in early spring or fall. Can be propagated by seed, but these lack vigor and seedlings are slow to reach flowering maturity.
Native American tribes have used the roots to treat various intestinal ailments.
Native Range & Classification
Recorded County Distribution: USDA data
AR, CT, DC, DE, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, NC, NH, NJ, NY, OH, OK, PA, RI, SC, TN, TX, VA, VT, WI, WV
|Species||Sisyrinchium angustifolium||narrowleaf blue-eyed grass|