Integrifolia Blue Boy A 1947 cross between C. integrifolia and C. viticella by Dr. F.L. Skinner in Borden, Manitoba, Canada. A good steel blue with slightly nodding 2.5-3.5″ (6-9cm) flowers. The blooming time is June to September. The non clinging stems are most attractive if grown through a small shrub, or attached to a support. Mature height is 4-6′ (1-2m). Pruning group C. Vines are shipped and sold as well-rooted starter plants Flower Color Blue FlowerSize 2.5-3.5″ (6-9cm) Flowering Period June – September Mature Height 4-6′ (1-2m) Planting Aspect Sun/ Partial Shade Foliage Deciduous USDA Zone 3 Suitable for Ground Cover Yes Suitable for Containers Yes