Deschampsia flexuosa:
Attractive architecturally shaped dark green foliage contrasts well with other plants. Pretty airy silvery purple flowerheads. To 50cm.
Festuca amethystina:
Evergreen grass with elegant, dusky purple arching flower stalks very early in season, for a grass.To 50cm.
Sesleria autumnalis (Autumn moor grass):
Evergreen grass with strappy bright green leaves, turning more yellow in autumn with silvery white flowers in summer. Hardy. Up to 60cm.