Ornamental plants are important design materials in landcape architecture work. Their use is of importance not only for their aesthetic effects but also for their functional properties. In an environment where green spaces have largely been destroyed and concrete structures have increased in number, the functional use of plants comes to the fore. The plant texture in urban spaces has a function that stabilizes the building and people. Therefore, plants provide the necessary balance of mass-gap in the urban fabric. It is necessary that design principles be followed while choosing the plants used in open-green spaces. Plants perform their visual and functional effects in spaces where plantation work is done in accordance with the principles concerned, thus making urban spaces liveable for people. This study discusses the functional and aesthetic effects of ornamental plants with samples of plants in green spaces in the center in the sample of Tokat.