Culture
Best grown in medium moisture, well-drained soil in full sun. Tolerates light shade. Prefers consistently moist soils that do not dry out, but drainage must be good. Plantings may be sheared back after bloom to tidy foliage for remaining part of the growing season. Plants may need to be divided every 2-3 years to keep plantings vigorous.
'Devon Skies' is tolerant of heat, humidity, and some drought once established.
Noteworthy Characteristics
Sisyrinchium is a genus of about 90 species of annuals and perennials native to North and South America. Although their foliage is grass-like, the blue-eyed grasses belong to the iris family not the grass family.
Genus name comes from the ancient Greek name for another plant.
'Devon Skies' is a hybrid sisyrinchium selection that features showy, 1" wide blue flowers with yellow center eyes and a clump-forming habit. Mature plants will reach up to 6" tall and spread to fill a 12" area. The flowers are held just above the slender, glossy, dark green, grass-like foliage from late spring to early summer. Purported to be sterile, and will not self-seed around the garden.
Problems
No serious insect or disease problems.
Uses
Best in groups or massed in rock gardens, border fronts or open woodland gardens. Also effective as an edger along paths or walkways. Foliage clumps are quite attractive when the flowers are not in bloom.