Promising ornamental grasses and sedges in the introduction collection of the Stavropol Botanical Garden

Relevance. Recently, to achieve maximum naturalness and naturalness of compositions in urban landscaping, ornamental grasses and sedges are increasingly used. They fit into any decorative landscape, in which they can act as a structure-forming component or as an addition. The purpose of the research is to develop a new range of ornamental grasses and sedges that are highly stable, decorative and promising for use in ornamental gardening of the region. Methods. In the introduction experiment, we studied the morph-biological characteristics of the plants under study. The degree of their adaptation to new natural and climatic conditions and resistance to a complex of environmental factors — winter hardiness, frost resistance, drought resistance and the degree of disease and pest damage were assessed. The time and duration of the decorative condition were taken into account. Based on the results of the analysis of the results of introduction studies, an assessment of the prospects was given. Results. Seven cultivars of warm seasonal ornamental cereals belonging to the genera Tripidium H. Scholz, Arundo L., Miscanthus Andersson, Pennisetum Rich were studied. Spartina Schreb., Nassella (Trin.) E. Desc ., a cold season cereal from the genus Phragmites Adans . and nine cultivars of sedges of the genus Carex L. The studied plants showed a high degree of adaptation to new natural and climatic conditions and retained useful economic and biological properties and characteristics. Plants are distinguished by winter, frost and drought resistance, are not damaged by diseases and pests, according to the scale of introduction resistance, they are classified as resistant plants. They have preserved the natural rhythms of ontogenesis, natural habit and life form, the ability to go through the full cycle of shoot development, and reproduce well by vegetative means. Decorative from 82 to 125 days and classified as a promising plant. The studied cultivars of cereals and sedges are diverse in their methods of use in landscaping and can perform various role tasks in landscape compositions. We can recommend for use in landscaping areas.