General Culture:
Grow in fertile, medium moisture, well-drained, humusy/peaty soils in full sun to part shade. Best flowering occurs in full sun. Light staking/pea sticks helps prevent undue sprawling of plant foliage. Roots should be kept cool, shaded and uniformly moist. Bloom occurs on the current year’s growth. Stems die back to the woody base each year in fall after frost.
Noteworthy Characteristics:
Clematis integrifolia, commonly known as solitary clematis, is a non-climbing, woody-based, herbaceous perennial that typically grows in a dense, upright to sprawling, shrubby mound of undivided leaves to 12-24” tall. Sessile, ovate-lanceolate, conspicuously-veined, entire, medium green leaves (to 5 1/2” long) form dense foliage clumps. Solitary, nodding, urn-shaped flowers, each with four twisted sepals and creamy anthers, appear in summer. ‘Caerulea’ is a cultivar that is noted for porcelain blue flowers (to 1 1/2” long) over a long June-August bloom period. Each flower appears singly atop its own slender stalk (pedicil to 8” long). Each flower is followed by a plumose, ornamentally-attractive, silvery-green seed head.
Problems:
No serious insect or disease problems. Clematis is susceptible to stem rot and wilt which can be fatal.
Uses:
This non-climbing clematis is best grown in large groups or massed. Border fronts, rock gardens, cottage gardens or meadows.
© Missouri Botanical
Garden, 2001-2010
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