How about this for beautiful foliage?
This zone 4 perennial is the perfect choice for pot accents or your shady flower beds. It gets 10" tall and 16" wide. The wonderful thing about this particular plant is that its color does NOT fade! I currently have one in a pot with a red sedge grass, 'Lacinato' kale, and a 'Red Rover' mum, and I LOVE it!