Hardy Geraniums (or Cranesbill) add colour as well as low, leafy ground cover from early summer through to late autumn. Not to be confused with the bedding Geranium, it is hardy so will come back every year. This is a pretty black variety called 'Raven'. Sold as budding sections of roots, ready to be potted-on or planted directly in your garden. You can buy one, two or three plants with this order.