The willow whips planted in March 2013 now have so much that they have their own canopy blocking out the light. I would estimate some are 20' tall with stems up to 3" in diameter. Salix smithiana has certainly done best in the very wet location they have been planted. I might consider coppicing them back completely in late winter, but will certainly take some hardwood cuttings and push them straight into the ground in another part of the garden.
