In this study, existing vascular plant species were determined and evaluated according to plant characteristics (esthetic & visual, functional, socio-cultural and ecological characteristics) in gardens of both detached house and site in the residential areas in the city center of Trabzon. Total of 125 sample gardens were surveyed with respect to different house age type (<10, 10-50 and >50 years) and housing density types (high, medium and low density type). During the study, the plants were pictured, measured and sampled for species identification. We analyzed only the first 10 species that arc most abundant for landscape preferences for each residential type. The study results showed that the gardens of detached house and site have an important floristic diversity with 232 plant taxa. In addition, it was determined that the non-native species are used widely in the study area and there is a significant relationship between plant species and the parameters used. According to Our results; fruiting, form, texture and scent for the aesthetic-visual characteristics; direction, screening and accent for the functional characteristics and tolerance of air Pollution and salinity in ecological characteristics along with the regional integrity came into prominence for landscape preferences based on the species characteristics. Our ann at this study was to determine plant species characteristics and their usage area in residential areas in order to help planting design in urban landscapes.