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Prior to the introduction of 'Jackmanii', the disease clematis wilt was little known and not widespread. [6] However, because 'Jackmanii' was bred from C. lanuginosa (a species which is susceptible to the pathogen which causes the disease), and because 'Jackmanii' led to a series of similar hybrids and the popularisation of the genus, clematis wilt soon became a serious problem for the new ...
The flowering period varies from early spring to late summer. Many spring-flowering cultivars produce a second flush of blooms after the main display has finished, and many have attractive silky seed-heads prolonging the period of interest. Clematis can be grown against walls, fences, over pergolas and obelisks, or through other shrubs and ...
Clematis is a genus of about 380 species [2] [3] within the buttercup family, Ranunculaceae. [4] Their garden hybrids and cultivars have been popular among gardeners, [5] beginning with Clematis 'Jackmanii', a garden staple since 1862; more cultivars are being produced constantly. They are mainly of Chinese and Japanese origin.
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George Junior and his father started to hybridise Clematis in July 1858. [1] Clematis 'Jackmanii' resulted from the first batch, and was awarded the Royal horticultural Society's First Class Certificate in August 1863. [1] With Thomas Moore, he co-authored The Clematis as a Garden Flower (1872; revised 1877). Jackman's papers are in Surrey ...
Calophoma clematidina is a fungal plant pathogen and the most common cause of the disease clematis wilt affecting large-flowered varieties of Clematis.Symptoms of infection include leaf spotting, wilting of leaves, stems or the whole plant and internal blackening of the stem, often at soil level.
Due to its disseminatory reproductive system, vitality, and climbing behavior, Clematis vitalba is an invasive plant in many places. [4] [5] The species is capable of rapid growth, climbing several times faster than English ivy, and each plant may produce in excess of 100,000 seeds. The plant may also spread through stem and root fragmentation. [6]
Clematis aristata is a popular hardy garden plant. It prefers a semi-shaded or shaded position and cool deep soils and will withstand heavy pruning. [5] It is a vigorous climber and may become a problem by smothering other plants. Propagation can be carried out from fresh seed and from cuttings of semi-hardened stems. [5]