Comprehensive assessment of the degree of landscape compositions’ ornamentality

Plantings’ ornamentality is an important aspect of the aesthetic appearance formation urbanized landscapes. In urban ecosystems, trees and shrubs are often exposed to high stress levels that shortens their lifespan reduces ornamentality. Plant introduction one methods enriching assortment with resistant species. The aim research was comprehensively assess degree North American tree groups from genetic collection All-Russian scientific Institute Fruit Crop Breeding (VNIISPK) arboretum give recommendations on improving composition. Research carried out in 2013-2019, taking into account dynamics changes decorative qualities during year. Throughout year, landscape compositions showed peaks same seasons year (May, September). To dynamism summer period, it recommended plant Spiraea douglasii 1st group; composition 2 — Hydrangea arborescens two varieties Physocarpus opulifolius: ‘Darts Gold’ ‘Summer Wine’. Graphics be used when drawing up for various purposes ensure either entire or a certain period.