Tall and spectacular, with arching leaves and bronze feathery panicles in summer, this ornamental grass makes a fine feature in the border. Calamagrostis x acutiflora 'Karl Foerster' can also be planted to form a feathery screen in the garden or grown in clumps in a gravel garden where its tall stems will sway and rustle in the breeze. Perennial Feather Reed Grass is quick to emerge each spring and is fast-growing and low maintenance. Height: 1.8m (5.9') Spread: 50cm (19).