'Perle d'Azur' clematis Description
Photo courtesy of Hof Pallenhoven
Group 3, Large-flowered, Late.
Blue, lighter center. 4 to 6 petals. Average diameter 5". Single, curved edge, curved tip bloom form. Mid-to-late summer.
Height of 10' to 12' (305 to 365 cm).
USDA zone 4b through 9b. Plant in sun or partial shade. Disease susceptibility: clematis wilt, mildew. In early spring, cut back to just above the lowest set of healthy buds.