Color: White Flower Size: 5-7″ (12-18cm) Flowering Period: May, June & Sept Mature Height: 6-9′(2-3m) Pruning Group: B1 Planting Aspect: Sun/ Partial Sun / Bright Shade USDA Zone: 4 Foliage: Deciduous Suitable As Ground Cover: Yes Price Group: Standard About Toki This beautiful variety from Japan has pure white 5-7″ (12-18cm) flowers with yellow stamens. They are produced in late spring and again in early fall. Mature height 6-9′(2-3m). Pruning group B1.