Research on ornamental grasses has made us cautious. Sources of information vary widely in the hardiness zone numbers. Many are not hardy in Zone 4 where we live. We have tried several that proved not to be hardy. And we feel we want clump-forming grasses rather than those that spread by rhizomes. We don't have many areas that we want a grass to take over.
MISP Miscanthus sinensis purpurascens Flame Grass is clump forming 4'-5' tall. Fall color is a rich presentation of orange, yellow, green, purple, and red. Winter color a rose beige. Silver plumes in fall remain attractive all winter. Space 3'. Spring only.