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The Rogerson Clematis Garden is a botanical garden located at Luscher Farm Park near Lake Oswego, Oregon. The garden is roughly 1-acre (0.40 ha) in size and is home to the Rogerson Clematis Collection, a Nationally Accredited Plant Collection consisting of more than 2,000 individual clematis plants.
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.
Clematis terniflora (sweet autumn clematis, sweet autumn virginsbower) is a plant in the buttercup family, Ranunculaceae. It is native to northeastern Asia (China, Japan, Korea, Mongolia, Siberia and Taiwan). [ 1 ]
Clematis orientalis is a deciduous vine or scrambling shrub in the buttercup family Ranunculaceae, that originates from Asia and Central Europe. It was brought to the United States as an ornamental plant but escaped cultivation leading to its classification as a noxious weed in some states.
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]
This plant is an aggressively growing vine which can climb to heights of 3–6 m (10–20 ft) by twisting leafstalks. The leaves are opposite and pinnately compound, trifoliate (3 leaflets) that have coarse unequal teeth on the margins.
Clematis vitalba is a climbing shrub with branched, grooved stems, deciduous leaves, and scented greeny-white flowers with fluffy underlying sepals.The many fruits formed in each inflorescence have long silky appendages which, seen together, give the characteristic appearance of old man's beard.
Clematis ligusticifolia is a climbing, spreading vine with showy flowers. It is also known as old-man's beard , yerba de chiva , and virgin's bower , (though old-man's beard may also refer to C. vitalba , and virgin's bower may also refer to C. lasiantha ).