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.

1. Trusheva N.A., Abdurakhmanova S.A. Application of ornamental cereals in the landscape architecture of the Southern cities of Russia. Aktual′nyye problemy lesnogo kompleksa. 2021; 59: 233‒237 (in Russian). https://www.elibrary.ru/lhzjxb

2. Imambekova G.A., Kalashnikov D.V. Comparative assessment of ornamental cereals for urban landscaping in the climatic conditions of the capital of Kazakhstan. Vestnik landshaftnoy arkhitektury. 2022; 32: 41‒47 (in Russian). https://www.elibrary.ru/mmiuiv

3. Safonova O.M., Tazina S.V. The use of ornamental cereal grasses in the improvement of urban areas in the Moscow region. Vestnik landshaftnoy arkhitektury. 2020; 22: 49‒52 (in Russian). https://www.elibrary.ru/xolokd

4. Oudolf P., Gerritsen H. Planting the Natural Garden. Portland: Timber Press. 2019; 288. ISBN 978-1604699739

5. Bakharev V.V. Ornamental grasses in landscape design. Belgorod: Belgorod State Technological University. 2022; 216 (in Russian). ISBN 978-5-361-01037-0 https://www.elibrary.ru/ittfqt

6. Aristova T.V. Flower beds of the new wave of Piet Oudolf in the landscaping of city blocks in Yekaterinburg. Agroforsayt. 2021; (3): 91‒101 (in Russian). https://www.elibrary.ru/kajfhe

7. Ivanova A.Yu. Pennisetum rich. in the plant collection of the Amur branch of the Botanical Garden-institute. Pomiculture and small fruits culture in Russia. 2023; 73: 55‒71 (in Russian). https://doi.org/10.31676/2073-4948-2023-73-55-71

8. Grechushkina-Sukhorukova L.A., Tazina S.V. Collection of ornamental grasses and sedges in the Stavropol Botanical Garden. Novosti nauki v APK. 2019; (1‒2): 53‒58 (in Russian). https://doi.org/10.25930/etbw-rd25

9. Shumik I.I. Scientific principles for creating biologically sustainable green spaces in the modern urban landscape. Subtropicheskoye i dekorativnoye sadovodstvo. 2008; 41: 360‒366 (in Russian). https://www.elibrary.ru/owhcop

10. Zheltovskaya T.T. Ornamental grasses in your garden. Moscow: Fiton XXI. 2014; 175 (in Russian). ISBN 978-5-906-171-56-6 Zaitsev G.N. Phenology of herbaceous perennials. Moscow: Nauka. 1978; 150 (in Russian).

11. Bylov V.N., Karpisonova R.A. Principles of creating and studying a collection of decorative perennials. Bulletin Main botanical garden. 1978; 107: 77‒82 (in Russian). https://www.elibrary.ru/wghbsf

12. Karpisonova R.A., Demidov A.S. Principles of creation and study of collections of ornamental plants of the Tsitsin Main Botanical Garden. Council of Botanical Gardens of Russia. Newsletter. Moscow: Main Botanical Garden of Academy of Sciences. 2001; 7: 7‒9 (in Russian).

13. Serebryakova T.I. Morphogenesis of shoots and evolution of life forms of cereals. Moscow: Nauka. 1971; 360 (in Russian).