Abstract: The emotional state and quality of the citizens' rest depends on the quality of the decorative floral design. The purpose of this work is to evaluate the floral design of the central part of the city of Izhevsk, to determine the optimal planting area of annual ornamental crops per 1 m2 and the factors that influenced the quality and decorative effect of regular-style flower beds in the conditions of Izhevsk. The selected objects for research are located along one route: Victory Square, Kuzebai Gerd Square, Likhvintsev Boulevard, the square near the residence of the Head of the Udmurt Republic, the square near the Children's Cafe. The examination of flower beds was carried out according to the principle of the route method. For a qualitative assessment of flower beds, the following were taken into account: the surface of the flower bed, the habitus and decorative properties of plants, the presence of decay, the state of the soil, the planting rate, and the littering. To assess the decorative effect of flower beds in the floral design of Izhevsk, the Department of Plant Introduction and Acclimatization of the Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences (UdmFIC UrO RAS) developed a 4-point assessment taking into account the laws of composition. Flower beds located on the territory of the studied objects are decorated mainly with annual flower crops and occupy an area of 3464 m2 (99.5%), including 1570 m2 (45%) in regular style, 13 types of ornamental plants of single–season use belonging to 10 families participated in the landscaping of regular-style flower beds in 2019-2020. When studying flower beds in the central part of Izhevsk in 2019-2020, the dependence of the assessment of quality and decorative effect on the density of planting flower seedlings was revealed, with increasing density, the decorative effect of flower beds improves. Several reasons have been identified that have affected the deterioration of the decorative nature of flower beds: violation of the planting dates of flower crops, sparse plantings (16 pcs / 1 m2), low level of agronomic care of flower beds.