Plants are used in interiors for various roles, while the selection of plant species is limited because of ecological reasons and the possibility of plant maintenance. This problem is especially apparent in shared spaces such as those in hospitality objects where plants serve a decorating function. Plant maintenance is difficult because the plants share the space with their users. This study aimed to research which plant species are most commonly used in common spaces belonging to various hospitality objects of different categories in the city of Zadar, to research their function, assess the state of the ornamental plants, their aesthetic value, possibility of maintenance and based on the results of the study to propose guidelines on how to improve maintenance of ornamental plants. The study was done by the inventarisation of plant species in the common spaces of the selected hospitality objects of different categories (four hotels, two restaurants, two coffee bars) in Zadar. After inventorying and organizing the findings, it was found that there are thirty-seven plant species that belong to one of the seventeen plant families. The most common plant species was Howea forsteriana, which was found in seven out of eight studied hospitality objects, and Araceae is the most common plant family. Its usage is such because of its adaptability to different ecologic conditions in different hospitality objects. The biggest number of inventoried plant species was recorded in the Hotel Iadera, which counts (twenty-four unique plant species). The smallest number registered was in the coffee bar Leggiero with three plant species. A correlation effect was observed between different hotel categories and the choice and number of unique plant species. Hotels of the higher category had a more significant number of unique plant species. Besides having the decorative function, most plant species serve a certain spatial function, out of which the most common was creating a feeling of privacy, splitting up the common spaces, easing of hard architecture lines, and reducing the intensity of light.