Commonly known as Narrowleaf Blue-Eyed Grass, this plant is not a grass but rather an iris relative found throughout the eastern half of the US. Flat sword-shaped leaves grow in fanlike clumps much like irises, and can rise to between 12-18 inches tall. Once mature, in spring to mid-summer branching stalks are formed that sport up to several dozen bright to soft lavender blue or indigo flowers with yellow centers. Very cold-hardy down to zone 4, they do best in constantly moist but also well-drained soils, like wet sand savannahs (suitable for pairing alongside American pitcher plants and similar, though will tolerate far higher nutrient levels).
Available plants are young seed-grown individuals with leaves between 6-9 inches in length.