Japanese Tree Peonies really are on of the most majestic garden plants you can grow when inb full Summer flower - their huge papery flowers covering the tree. Yet depsite their fine foliage and paper-thin flowers, they are very robust and very hardy, and suprisingy easy to grow - although patience helps too, as they can be slow to really get going for a year or two after initial planting. Modern varieties are grafted, and all produce their classic huge flowers, up to 20cm *(8') across in late Spring and summer. Plant sraight into deep, well-drained soils (avoid growing in pots for best results), they are fairtly fuss free, and will produce flowers from 2-3 years time.