Color: White Flower Size: 7-9″ (17-23cm) Flowering Period: May and June Mature Height: 6-8′ (2-2.5m) Pruning Group: B1 Planting Aspect: Sun/ Partial Sun / Bright Shade USDA Zone: 4 Suitable For Container: Yes Foliage: Deciduous Price Group: Standard About Gillian Blades Gillian Blades features and exquisite white blooms with frilled edges against a yellow stamen. The 7-9″ (17-23cm) are produced on a compact 6-8”(2-2.5m) plant. Pruning group B1.