Clematis 'Purity’ is a cultivar of Clematis fosterii and Clematis paniculata, that was bred  by the late Mr Arthur Ericson of Akaroa for its hardiness in the garden.  It is a strong growing evergreen climber, with stunning large creamy white sweetly scented flowers in late spring.  It requires a cool root run, so it suits an east or south facing fence, pergola or archway (it can also be grown up a tree), making sure that the lower branches and roots are shaded, as this is crucial. It needs good drainage, and moderately moist, fertile soil. Water well in its first summer, which will help it tolerate more dryness thereafter. Can also be pruned to about half its size after flowering to help maintain its vigour, and develop new flowering wood. Can be pruned more heavily if it becomes untidy!