Much is made of the beauty of grasses during the winter.  Pictures of sunlight sparkling on panicles covered with hoar frost are very seductive, but, in fact, the days when we see this are rare.  Chasmanthium, though, looks attractive during the early winter even without the addition of frost.  The diaphanous copper-coloured seed heads are flat, and dangle from arched stems.  It has a reputation for seeding itself everywhere.  My clumps are growing in the top of a low wall and I have not had a problem with unwanted seedlings.