POSSIBILITIES OF USING ESSENTIAL OIL ROSES OF RUSSIAN SELECTION IN ORNAMENTAL GARDENING

Recently, thematic and aromatherapy gardens are becoming increasingly popular; ornamental qualities of plants which grow there are combined with useful properties and bright aromas, evoking emotionally pleasant images and feelings. Essential oil rose – combines all the necessary qualities for such a garden and can take one of the central places in it, harmoniously combined with other essential oil and medicinal plants. Of particular importance are varietal roses of Russian selection, resistant and tested in local conditions. The purpose of the study was to investigate the biomorphological features and the degree of manifestation of decorative features in 11 Russian cultivars of ornamental oil roses belonging to the Nikitsky Botanical Garden’s collection used for creating aromatherapy rose gardens in the health resort and park areas of Crimea and southern Russia. The studies were carried out from 2015 to 2022, in collection plantings on the grafted plants of aromatic rose cultivars in the conditions of the Southern Coast of Crimea (South Coast). The natural and climatic zone of this territory belongs to the Central South Coast agroclimatic region. The studies were carried out according to generally accepted methods. Based on the research results, the main morphological, decorative features of roses and their biometric indicators were determined, such as the height, diameter and shape of the bush, the number of flowers in the inflorescence, the type of flower, the diameter and doubleness of the flower, as well as the aroma of the flower: the average long-term date of floral initiation and the average duration of flowering over the past seven years (from 2015 to 2022) were recorded, considering the changing weather and climate conditions in the region. Various morphological and biological characteristics of the studied aromatic rose cultivars allow them to be rationally used when creating aromatherapy and rose gardens. Based on the research results, recommendations are given for using cultivars of aromatic roses in ornamental gardening.