Sisyrinchium angustifolium (Blue-eyed Grass) Ephemeral Could be a nice replacement

Could be a nice replacement or substitution for boxwood

the tuft forms above the waterline creating a tussock sedge meadow

A favorite of bees

Photo 3 By: Schwarze Apfelbeere GFDL CC BY-SA 3

via Wikimedia Commons

Sisyrinchium angustifolium (Blue-eyed Grass) Ephemeral Could be a nice replacementClusters of beautiful violet blue flowers appear in spring on stalks emerging from very attractive grass like leaves. The plants are fairly easy to grow and will gradually form larger clumps that will impress as a border planting, rock garden, edging along paths or cottage gardens. Interestingly enough, blue eyed grass belongs to the iris family and not the grass family Sun Exposure Prairie Soil Conditions Wet Mesic, Mesic Height 8" 1' Flower Color