The city of Kinshasa, capital of the Democratic Republic of Congo, has been marked for some years now by anarchic and ever-increasing urbanisation. This goes hand in hand with galloping demographic growth, which is increasing the pressure on urban green spaces. The resulting environmental impact is likely to increase in the years to come. Green spaces that were once considered a nuisance are now being given special attention, for the well-being of city dwellers. The aim of this study is to identify the benefits of the green spaces lining some of the public roads in the commune of Lemba. In order to carry out this study, a questionnaire was sent to users to gather their opinions on Lemba’s lined green spaces. This questionnaire was supplemented by direct observations in the field to assess the behaviour of the population with regard to these green spaces. The itinerant inventory method was used to identify the plant species present along five major public roads in the municipality under study. A total of 100 users of the green spaces were interviewed at random. The majority of these users were men (67%). Their main reasons for using the green spaces were to relax (33%), enjoy the shade (24%) and the peace and quiet (22%) at certain times of the day. According to these users, green spaces serve mainly to regulate the climate (19%) and beautify the city (17%). The lack of trees on certain roads to provide shade and the absence of public gardens to take advantage of their amenities led 93% of respondents to call for an increase in the number of trees in line and the creation of public gardens. Analysis of the floristic data shows that the tree stock in the Lemba commune’s green spaces includes 22 species divided into 21 genera and 16 botanical families. Nearly 73% of these species (16 species) are of exotic origin and nearly 55% of these plants (12 species) are reported to be edible. These results will enable the local political and administrative authorities to take these areas into account in the planning and development of the city, for the well-being of the population.