Autumn Moor Grass, Sesleria autumnalis is a cool season ornamental grass. Springtime blades emerge green and may reach a height of 18", only to give rise to silvery and slender blooms that take the this compact grass to nearly 2' tall in late summer through fall. Leave the flowers on Autumn Moor Grass through winter as they dry to a pretty parchment and look handsome along borders or when used has a unique groundcover.