Fabulous, very tall (2m) strong grass that doesn't spread too much, comes up every year and has beautiful silvery coloured seed heads which start purplish and which look wonderful when out with the sun behind them. The heads last through most of the winter too and are then stripped in early Spring by the birds for their nests. I cut it back to the ground once they've done this. Great value and as good as or better than Stipa gigantica in my book because it has striped green and white leaves as well.