Variegated Moor Grass
Molinia caerulea 'Variegata'
Size: 18".    
Light requirement: full sun to part shade.
Flowering - time/color: early summer/purple tinted.
Foliage - spring/summer: creamy white and green.
Foliage - fall/winter:  
Attributes: attractive variegated creamy white and green foliage.