Red Star Originally from Japan, this variety has deep red double flowers. Pruning Group B. Vines are shipped and sold as well-rooted starter plants Flower Color Red Flower Size 4-5″ (10-12cm) Flowering Period May through October Mature Height 6-9′ (1.8-2.7m) Foliage Deciduous Planting Aspect Sun / Partialshade Cold Tolerance Zone4 Suitablefor Container Yes