​Erigeron compositus 'Railroad Ridge' is a distinctive, miniature form of the cutleaf daisy, characterized by its compact, cushion-like growth and delicate daisy-like flowers in shades of white, pink, or lavender. This particular form was collected by Betty Lowry, a prominent figure in Pacific Northwest rock gardening, on Railroad Ridge in Idaho

A wonderfully compact version of the circumboreal alpine daisy, this one has bright blue flowers and looks absolutely dynamite in a trough/rock or crevice garden. Glaucus blue foliage looks great even out of bloom!

This is standout trough plant, but also can be wonderful planted in a drift through the crevice or rock garden.