Its a good time to cut back dead foliage on Ornamental Grasses. Grasses such as Calamagrotis (Feather Reed Grass), Miscanthus (Maiden Grass), Imperata (Japanese Blood Grass), Pennisetum (Fountain Grass).  This can easily be done by tying the grasses about a foot above the ground, and cutting above the tie.

Some grasses such as Fescue, Carex and Helictotrichon are evergreen and should not be cut back. These grasses only need dead foliage removed.