Maidengrass - Miscanthus sinensis [to 8' tall].  Full sun, moist.

17 Top Ornamental Grasses

Add an airy, delicate look to your landscape with graceful miscanthus. Its arching foliage and feathery summer plumes make it a great late-season privacy screen (it can reach 8 feet tall or more) or a soft backdrop for your favorite perennials.

Hakonechloa Macra. Jardín Aravaca Paisajismo Miguel Urquijo

Hakonechloa Macra is a japanese, non-invasive sedge type grass is an option for planting behind the roses.

Miscanthus sinesis

Miscanthus sinesis