Color: Purple Flower Size: 6-8″ (15-20cm) Flowering Period: May-Sept Mature Height: 8-12′ (3-4m) Pruning Group: B2 Planting Aspect: Sun/ Partial Sun / Bright Shade USDA Zone: 3 Suitable For Container: Yes Foliage: Deciduous Price Group: Standard About Guiding Star This beautiful clematis features large deep rich purple flowers that bloom all summer long. This vigorous grower fills a large trellis beautifully. Pruning group B2.