The article shows the results of the influence of different concentrations of allelochemicals of Acer negundo L. leaf litter, germination energy, absolute germination of seeds and plant growth. The seeds of Raphanus sativus L. and Avena sativa L. were used as model objects. Active substances contained in leaf litter A. negundo, have a selective inhibitory effect on the germination of seeds and the growth of seedlings of monocotyledonous and dicotyledonous plants. The allelopathic effect of the fall is not a limiting factor for the germination of seeds of herbaceous plants of the above-ground cover of the studied plantation.

In the cultural space of the current period of history, the intensification of the process of cultural transfer contributes to a change in the canonical circle of national creativity, including in gardening art. Therefore, understanding the modern interpretation of the ideal space, which has always been understood as a garden, is important for determining the trends in the development of ornamental gardening in general. Intensive cultural exchange within the ancient empires gave rise to a worldwide process of universal economic, political and cultural integration and unification, called globalization. To understand this process, it is necessary to take into account a number of factors that allow foreign cultural traditions to take root, in our case, the traditions of ornamental gardening. The objects of research were more than 200 gardens in China, Japan, Vietnam, India, Morocco and European countries personally visited and studied by the authors for 25 years. The article shows how the Chinese garden culture influenced the formation of the appearance of the gardens of Europe, and the Greco-Roman architecture largely shaped the appearance of the English landscape park. An analysis of the facts presented in the article showed a close relationship between historical events and periods of development of decorative gardening techniques, which have been preserved in gardens for thousands of years along with other cultural monuments. However, it must be remembered that there is also a negative side of globalization -the loss of the cultural identity of countries and peoples.

The article examines a number of causal relationships, historical events and traditional beliefs directly influenced on the Japanese garden structure and layout. The data on the adaptation of the Chinese theory of Feng Shui by the Japanese ethnic group are presented. Based on the survey of 27 landscape architecture objects in Kyoto, created over 1000 years from the Heian period to the end of the Meiji period, the author concludes that one of the most important Japanise garden planning concept is the mountain and water polarity on the North-South axis in gardens.

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