There is the site of lianas as a part of the exposition «Fruticetum» in the Botanical Garden-Institute of Volga State University of Technology. It is an area of 0.15 hectares, with 5 rows of metal supports 1.5–3.0 high. Woody plants of 98 names from 14 genera of 10 families grow here: Actinidiaceae, Aristolochiaceae, Bignoniaceae, Caprifoliaceae, Celastraceae, Hydrangeaceae, Menispermaceae, Ranunculaceae, Schisandraceae, Vitaceae. The largest number of taxa in the collection includes the following genera: Clematis – 54 taxa, Vitis – 10, Lonicera – 7. The most widely represented family is Ranunculaceae (56 taxa). The Vitaceae family contains the largest number of genera (3). Cultivars and hybrids have the main share in the collection (62.2%). The cultivars of clematis are the most numerous (42 names). They have a high decorative value and are an undoubted decoration of the site. The low ornamental shrubs and perennial herbaceous plants are planted in the exposition to increase the decorative effect. The article provides information about winter hardiness, growth and development of lianas, as well as the features of agrotechnical measures. The directions of development are presented. These data are of interest to employees of botanical gardens, students of plant-growing directions and amateur gardeners. The materials are accompanied by photographs.

Representatives of the genus Pentaphylloides are low ornamental shrubs that are valued for long abundant flowering, compact size and unpretentiousness to growing conditions. P. fruticosa is a valuable plant that has not only decorative value, but also food, medicinal, soil protection. For medicinal purposes, young flowering shoots are used, harvested during budding and flowering. The article presents the results of phenological observations in 2018-2020. The objects of the study were plants of 8 kinds of Pentaphylloides in the collection of the Botanical Garden-Institute of Volga State University of Technology (Yoshkar-Ola, Mari El Republic). The studied plants undergo most phases of seasonal development, with the exception of the mass end of shoot growth, complete lignification of shoots, mass ripening of fruits, mass leaf fall. Species and cultivars vegetated from the end of April – the beginning of May to the end of October in a short time. The vegetation period was 177-182 days. There was no significant difference in the timing of the passage of phenophases between the taxa. Plants of Р. × friedrichsenii and P. mandschurica passed most of the phenophases earlier than the average dates for the genus, and 'Goldfinger' and 'Klondike' – later. The earliest and longest flowering was characterized by P. friedrichsenii (65 d.), the latest and shortest – P. fruticosa (28 d.). All plants of P. fruticosa cultivars bloomed for a longer period than the species. After mass flowering, single flowers were observed in representatives of Pentaphyloides until mid-October.

The article presents the analysis of the dynamics of the Hydrangeaceae family collection in the "Fruticetum" exposition. The study was conducted on the basis of introduction cards and introduction journals of the BSI as of 2020. Currently, Hydrangeaceae includes 78 names: 6 Deutzia taxa (8 samples), 24 Hydrangea taxa (30 samples), 48 Philadelphus taxa (56 samples). Among all samples, 72.4% came in the form of seedlings, 22.3% – green cuttings, 5.3% – seeds. The main source of hydrangeas is the Main Botanical Garden of the Russian Academy of Sciences, from where 54% of all samples were obtained. Also, samples were received from other botanical gardens, nurseries and from private individuals. The oldest surviving specimen (Deutzia scabra) was received in 1974. The most intensive replenishment of the collection was observed in 1981–1983, later it slowed down. Since the mid-2000s, the attraction of new species and varieties has accelerated again. Graphs showing the dynamics of the number of taxa and samples of the studied genera are given. In total, 389 plants of the studied family grow in the exposition, of which the largest number are Mock orange. Most taxa are represented by 1 to 13 plant specimens. Further increase in the collection is constrained by the shortage of free territory for planting. This article is of interest to employees of botanical gardens, students of plant-growing directions and amateur gardeners.

As part of the Botanical Garden-Institute of the Volga State University of Technology, a collection of ornamental shrubs is presented in the exposition "Fruticetum". As of 2020, plants from 86 genera of 30 families grow here. The largest number of taxa in the collection includes the following genera: Syringa – 97, Spiraea – 61, Philadelphia – 48, Berberis – 30, Lonicera – 24, Rosa – 22. The largest families are Rosaceae (167 taxa), Oleaceae (97), Hydrangeaceae (77), Caprifoliaceae (35), Berberidaceae (31). The most genera contain the families Rosaceae (28 names), Fabaceae (10), Oleaceae (5), Caprifoliaceae (5), Cupressaceae (4). Angiosperms include 505 taxa, gymnosperms – 26 taxa. The main share in the composition of the collection of Fruticetum are varieties and hybrids – 305 names, there are 226 species of plants, which is associated with the main purpose of the exposition – to present a variety of assortment of ornamental shrubs. Mandatory scientific research includes an annual assessment of winter hardiness, a note on the presence of flowering and fruiting in all plants in the exposition, conducting phenological observations of a number of plants. The features of agrotechnical measures carried out in the exposition (pruning, fertilizing, watering, weeding, pest and disease control, shelter for the winter, mowing grass) are indicated.