Named after the well known grass expert Poul Petersen of Overdam nursery in Denmark, this relatively new variety forms good sized clumps of quite upright stems. It looks superb in prairie style planting mixed with summer flowering perennials such as Echinaceas or Achilleas, but it also has a strong enough presence to be used in gravel gardens. They are perfect for adding movement too as their delicate flower spikelets will waft happily in the lightest breeze.