A tough perennial with heights of up to 80-100 when in flower.  It has long, narrow, finely dissected aromatic green leaves and umbels of white,cream or pink flowers which can be used for cutting and drying.  They attract bees, butterflies, hover flies and other beneficial insects. 

Good for planting amongst grasses and in the wilder parts of the garden, and seeds are a good source of food in late autumn/winter, so cut down in late winter to allow birds etc to enjoy the seeds.