Monday, March 2, 2009

Viburnum Rhytidophyllum

By Victoria Katelyn

Viburnum rhytidophyllum is an evergreen shrub of upright habit growing to a height of 2-3 m. The shoots are yellowish tomentose. The clusters of flowers begin to develop in autumn, remain dormant throughout the winter and unfold during May and June. The fruits ripen at the end of September.

This shrub is widespread throughout most of Europe, its range extending far east to Siberia. In central and western Europe it grows on the edges and in the shrub layer of woods, on scrub-covered banks and in hedgerows. It likes fresh, rich soil and tolerates fairly heavy shade.

Not only does it have lovely fragrant blossoms but also attractive red fruits. To bear a profusion of flowers, however, it requires a sunny and warm situation. It is readily propagated by means of seeds as well as by cuttings. It is hardier than the common honeysuckle (L. periclymenum). Crossed with the related species L. etrusca, it yielded the hybrid x L. americana with striking purple flowers.

Honeysuckle is a stem-twining, vigorous climber growing to a length of 5-8 m and sometimes to an age of 50 years, when it develops a thicker stern. The twining stem is capable of choking and even strangling weaker trees. The shoots are yellowish to reddish, the buds opposite, standing out from the twig at an angle.

This is a shrub of the central European mountains, mostly the Alps, Sudetens and Carpathians. Even there, however, it is comparatively scarce, growing mainly on rocky banks, in clearings and on soils rich in humus alongside streams, at elevations between 600 and 1500 m. It is entirely frost-resistant and tolerates heavy shade.

It bears a great profusion of flowers if provided with abundant light, but tolerates partial shade. It requires warmth and the shoots are easily damaged by frost. It is widely cultivated as a vigorous, ornamental climber in parks and gardens, where it is used to cover fences, walls and pergolas. Propagation is by means of seeds and cuttings. The variety serotina has dark red flowers.

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