Free-flowering, Clematis Crystal Fountain produces masses of stunning violet-blue, semi-double flowers, 4-5 in. across (10-12 cm), adorned with a fountain-like center packed with silvery-mauve petaloid stamens. Flowering comes in two waves: first in late spring to early summer, then in late summer to early fall. When the outer sepals fall away, the flowers still add interest with their tuft of silvery-mauve petaloids left. The branches are clad with attractive, mid-green ovate leaves. Shade tolerant, this compact, large-flowered clematis is ideal for small gardens, containers and looks terrific when combined with small shrubs with golden foliage