I have long been a fan of Persicaria Amplexicaulis, with its strong spikes of flowers late in the summer. The straight species is a lovely thing but now there is a whole new range of cultivars available recently bred by Chris Ghyselen in Belgium. One of my favourites of these is P. Pink Elephant with its abundant, dainty pink trunks of flowers. These start in June and continue deep in to the autumn, making a compact clump about two feet high. We first got hold of this cultivar about four years ago and now it is really well established at the front of the long border combining perfectly with Aster Pyrenaeus ‘Lutetia’.