Assessment of the prospects of using topiary forms of coniferous plants in the conditions of the city of Saratov

The article is devoted to current research on the formation of topiary from coniferous plants, as an element that increases the decorative qualities of landscaping objects throughout the year due to the diverse coloring of needles from green to blue. The authors presented an analytical review, according to which data on the influence of geographical origin on winter hardiness and drought resistance of varieties of Juniperus and Thuja species are limited in the conditions of Saratov. The purpose of the study was to assess the nature of growth and development of Juniperus and Thuja species and varieties after shearing, plant resistance to a complex of adverse factors in the conditions of Saratov. The prospects for the introduction of woody plants were determined by the method of integral numerical evaluation, developed in the Department of Dendrology of the SBS of the USSR Academy of Sciences. The prospects of the introduction were determined by the sum of the scores of the indicators and the scale. Species composition of phytopatogens of Juniperus and Thuja varieties and forms in the conditions of Saratov was determined by the macroscopic method. Studies are presented concerning the necessity and optimal frequency of pruning of conifers adapted to the stressful conditions of the urban environment. In the conditions of Saratov, for varieties of Juniperus and Thuja species, molding pruning based on the conducted studies is recommended in early spring before May 15 or at the end of summer. In autumn, only broken branches and bald shoots are cut off from coniferous plants. The studied species have sizes and shapes close to the natural ones characteristic of individuals within the range. All the studied varieties of thuja and juniper are classified as quite promising.

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