It's named after the interesting flower form—highlighted in the center by large sprays of pale lavender and green. Crystal Fountain is very vigorous, blooming on both the previous year's and new year's growth. It'll take time and establish slowly, but these gorgeous blooms are worth the wait. Once it's established, this clematis will grow much more quickly.
Crystal Fountain™ Clematis blooms best on old wood, but it can also bloom on new wood. Use caution when pruning to retain healthy stems from last season for best flowering.