This is my American spikenard, a striking plant from the eastern US. It is a herbaceous Aralia and gets to nearly 10ft high. I really like it, but I got its seed as American ginseng, a related plant only a few inches high and planted the young plant near the path not realising what it really was. So each spring up it comes as imposing as ever when it flowers, which just like ivy attracts a large number of wasps that become increasingly grumpy as August wears on. By September it gets very interesting to get past this plant, yes , I could move it, but it likes it there, all part of the rich tapestry of a garden.