Color: Blue Flower Size: 1-2″ (3-5cm) Flowering Period: June-Sept Mature Height: 4-6′ (1-2m) Pruning Group: C Planting Aspect: Sun/ Partial Sun / Bright Shade USDA Zone: 3 Suitable For Container: Yes Foliage: Deciduous Price Group: Standard About Integrifolia Rooguchi Rich shiny purple deeply ribbed bell shaped 1.5″ (4cm) deep and 1″(3cm) across flowers with silvery-purple margins. The non clinging stems are very sturdy and are most attractive if grown through a small shrub or attached to a support. The blooming time is June to September. Mature height is 4-6′ (1-2m). Pruning group C.