Sisyrinchium angustifolium: Blue-Eyed Grass

Latin name: Sisyrinchium angustifolium
 Sisyrinchium angustifolium: Blue-Eyed Grass
Common name: Blue-eyed grass
Flowers: Blue showy flowers16
Fruit: Inconspicuous16
Height & Width: 2’ x 1’12
Type: Perennial 16
Habit: Forb/herb 16
Wetland indicator category**: FACU FACW-17
Texture: Fine16
Growth rate: Moderate16
Light: Full sun12
Moisture: Medium12
Soil*: Fine and medium, ph 5-716
Zones: 4-912
Origin: Eastern half of United States 16

Features: Although they appear to be grasses and are called as such, Sisyrinchium is actually a member of the iris family. Violet-blue flowers appear at the top of branched stems that grow up through the grass-like foliage. Typically this perennial forms in clumps together12.

Siting: These plants perform well in medium moisture and well-drained soils. They prefer full sun, but the soil must remain moist. Typically they are found growing in damp forests12.

Care: Plant crown at soil level18. At planting, water the roots and surrounding area slowly and deeply. Keep soil moist until plant is established, then apply enough water to thoroughly moisten the root zone when the soil is dry or during drought. Modify water recommendations to reflect site drainage and rainfall. Apply 3” of mulch over the planted area. Do not allow mulch to touch the plant stems18.

Pests: Plants are relatively pest resistant if cultural preferences are met.

Author: Alexander Smolka