Slums and informal settlements in African cities are notably connected to green spaces and natural ecosystems serving as green infrastructure. Green Infrastructure holds the potential for improvement of the quality of life and the environment by harnessing benefits for people's livelihoods, food security, environmental regulation, socio-cultural appropriation, etc., and by addressing constraints to greening. Policy initiatives and relevant greening programs, especially those utilizing participatory, low-cost, socio-economically empowering approaches, are recommended.