The article analyzes the results of phenological observations on the growth and development of parental plants of introduced varieties of Аctinidia (Actinidia Lindl.) And identifies the importance of agroclimatic and phenological observations for their cultivation in the Right Bank Forest-Steppe of Ukraine. The correspondence of the phases of growth and development of Аctinidia cultivars with the weather conditions of the Right-Bank Forest-Steppe of Ukraine has been studied. Climatic features and weather conditions (changes in the amount of heat, precipitation, moisture, wind strength, clouds, etc.) during the growing season of actinidia plants of the studied varieties significantly affect their vegetative and reproductive productivity. Peculiarities of seasonal development of Аctinidia cultivars are clarified and terms of passing of phenological phases of seasonal cycle of growth and development of uterine plants which are characterized by high vegetative productivity, which is a biological basis for root reproduction are considered. The most popular for landscaping and use in ornamental horticulture varieties of Аctinidia (Actinidia Lindl.) Are summarized and recommended for cultivation in soil and climatic conditions of the Right-Bank Forest-Steppe of Ukraine. Observation of the growing season and the accompanying weather conditions makes it possible to correctly apply agro-technological measures for growing Аctinidia plants in parks and landscapes. The decorative properties of the studied varieties are determined, the success of the introduction is assessed and practical recommendations for their use in the green construction of the Right-Bank Forest-Steppe of Ukraine are offered.

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Laboratory similarity of introduced Chinese calisthephus varieties has been investigated with a view to further using seedlings in soil conditions of the best genotypes. Also, the main task was to determine the actual intensity of seeds germination in the studied varieties of Chinese callistephus in the laboratory. The studies uexamined 20 introduced varieties of Chinese calisthephus plants with diff erent characteristics, origin and direction of use, with their further study on the main economic and valuable features for landscaping. As a result of the studies conducted on the similarity of Chinese introduced calicephus varieties seeds with diff erent economic traits, productivity and direction of use, the genotypes were isolated and grouped, on average over the years, with high, medium and low coeffi cient of similarity. Accordingly, the germination control was performed starting from the fourth day after sowing. It should be noted that the sprouts were not recorded in six varieties, respectively – in the Malynovyi shar, Esmeralda, Vesnyanka, Syedaya Dama, Salmon Turm and Sofi a. The varieties of Oksamyt, Oksana, Princess and Amber had a similarity rate of 10 %. Medium and high rates of seed germination (50–90 %) were recorded in the varieties of Odarka, Hilda, Snizhana, Anastasia (Soph.), Winter Cherry, Alexandra, Swan Lake and King Size (red), which will further enable the respective varieties research on the study of economic biological, and most importantly the decorative properties of introduced varieties for the purpose of their further use in the landscape gardening. Key words: genotype, Chinese callistephus, varieties, introduction, economically valuable traits, decorative, seed germination, multiplication factor.