The rich indigo-blue 4-6" (10-15cm)flowers with deeply furrowed mid-ribs and white stamens are a favorite off lower arrangers. The blooming period is June to September nonstop. The non-clinging stems are very sturdy and are most attractive if grown through a small shrub, or attached to a support. Mature height is 4-6' (1.5-2m).Pruning group C