Clematis Heracleifolia Group

Origin: Cultivars are derived from the botanical Section Tubulosae, for at least one parent, like Clematis heracleifolia and Clematis stans.
Habit: Either erect or climbing, deciduous. In some cultivars the shoot will die down to its base during winter, in others the shoot might survive.
Leaf: Ternate or pinnate, rather herbaceous, petioled. Leaflets simple, course, margin serrate.
Inflorescence: Usually a few-flowered dichasial cyme, axillary and terminal on young shoots. The shoot is usually fully grown and the terminal flower first. When the shoot has axillary cymes on a long peduncle than all the inflorescences along the whole shoot might have the terminal flower open at the same time.
Bracts: Present, leaflike but less divided to simple.
Flower: Unisexual or bisexual, tubular or campanulate to almost spreading, nodding to horizon¬tal or upright, several cultivars are very fragrant, bud nodding or upright.
Tepals: 4-6, white, cream-yellow, red-purple or blue to violet.
Stamens: Filaments hairy or partly hairy or sometimes glabrous.
Flowering time: Summer and early autumn.
Seed tail: plumose, seedhead not persistant.
Zone: 5-9 (EU & USDA zones).
Hard pruning.
Planting depth: Same level as in the pot, do not plant deeply.
Roots: Fibrous.
Leaves in seedlings: Alternate.



ref: Wim Snoeijer (2008) Clematis Cultivar Group Classification with Identifying Key and Diagrams.

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