Color: Blue Flower Size: 6-8″ (15-20cm) Flowering Period: June-Sept Mature Height: 8-10′(2.5-3m) Pruning Group: B2 Planting Aspect: Sun/ Partial Sun / Bright Shade USDA Zone: 4 Foliage: Deciduous Suitable For Container: Yes Price Group: Standard About Will Goodwin 6-8″ (15-20cm) lavender-blue flowers with wavy edges and cream colored stamens. Blooming time is June to September on a 8-10′ (2.5-3m) plant. Pruning group B1.