C. alpina 6' - 8' in height, blooms April-May. Flowers on long stalks, 1-1/2" nodding, bell-shaped flowers, lavender or purple-blue in color. Seed heads are grey fluffy balls holding until winter. Hardy, fool-proof plant. Group A pruning.
C. armandii 15' - 30' in height, blooms April-May. 2" diameter blooms, creamy white in large axillary clusters; has a strong vanilla scent in warm weather. Strong, vigorous grower. Group A pruning; can cut to base to rejuvenate vine.
C. chrysocoma 20' in height, blooms May-June. Long stalked flowers 1-1/2" - 2" in diameter occur in axillary clusters; pale mauve-pink with creamy stamens. Some bloom occurs in late summer. New foliage is bronze-red. Group A pruning.
C. flammula 15' - 20' in height, blooms August-September. Flowers occur in terminal clusters in great masses; are 1" - 1-1/2" in diameter, white. Grown from seed so growth can be variable. Group C pruning.
C. macropetala up to 15' in height, blooms April-May. Flowers are double, nodding bells, 2-1/2" - 3" in diameter, pale blue with purple shading. Seed heads last into winter. Foliage is neat and attractive; plants prefer cooler, shady location. 'Snowbird' is pure white with a hint of green on inside of bloom. Group A pruning.
C. montana 20' - 30' in height, blooms May-June. Flowers are white, 2" - 2-1/2" in diameter and some cultivars have a vanilla scent. One of the easiest to grow and propagate; very vigorous. Group A pruning.
C. tangutica 10' - 15' in height, blooms July-October. Most common yellow flowered form. Flowers are 1" - 1-1/2" in length and nod on a long stalk, singly or 3 to a stem. Seed heads are spectacular, lasting into winter. Group C pruning.
C. viticella 10' - 12' in height, blooms July-September. Flowers slightly nod, are 1-1/2" - 2.5" borne singly or in clusters on a slender stalk; rich deep purple with small green stamens. Vigorous and easy to grow. Group C pruning. 'Abundance' is bright mauve-pink red with deeper red veins and creamy green stamens. 'Etoile Violette' has slightly larger blooms that are deep purple with creamy-yellow stamens.