Introduction of ornamental shrubs and prospects for their use in landscaping

The purpose of the study is to summarize the results of the introduction, to select the most stable and highly decorative shrubs to expand the assortment in landscape gardening in the Stavropol territory. The object of research was a collection of ornamental shrubs, numbering 255 taxa, cultivated in the Stavropol Botanical Garden. The following genera are represented by a significant number of species and varieties: Berberis L., Hydrangea L., Spiraea L., Weigela Thunb. As a result of the introduction test, an assortment of species and varieties with high decorative qualities and adaptive capabilities was identified for practical use in new conditions. The characteristics of decorative qualities, flowering periods and the period of general decorativeness in the soil and climatic conditions of the Stavropol Upland are given. According to the variety of decorative features, the assortment is divided into beautifully flowering, decorative deciduous and beautifully fruiting shrubs. The basis of the collection is made up of beautifully flowering shrubs that play an important role in landscape gardening compositions. Attracting garden forms with original colors of leaves and fruits makes it possible to increase the overall decorative effect of the composition for a longer period. In the collection, 32% of the total composition is occupied by decorative deciduous shrubs. Over a long period of introduction, about 100 highly decorative and locally resistant species and varieties of ornamental shrubs were selected and successfully introduced into landscape gardening in the Stavropol region. The range of resistant, ornamental shrubs in the region is expanding through the selection of its own varieties. Two decorative deciduous varieties of Thunberg barberry “Ruslan” and “Styopka”, bred by the Stavropol Botanical Garden, were included in the State Register of Breeding Achievements.

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