Creating and sustaining urban green spaces in Africa under phenomenal urbanisation: residents’ perspectives on home gardens in Wa, Ghana

Attaining the goals of the New Urban Agenda and Sustainable Development Goal (SDG) 11, which aims for sustainable, inclusive, and resilient cities, necessitates accelerated efforts to green urban environments. While keeping home gardens is not new, it offers a unique potential as a deliberate strategy for urban greening in Africa. However, Ghana has limited empirical evidence regarding the motivations, challenges, and constraints of keeping domestic gardens, which is essential for informing urban greenery policy. This study addresses this knowledge gap by employing the self-determination theory and conducting an exploratory cross-sectional survey with 285 structured questionnaires administered to residents in seven rapidly growing neighbourhoods in Wa, Ghana. The results reveal that 56% of respondents had gardens within their properties, with beautification (56.1%) and food production (52.3%) being the primary motivations. Vegetables (46.7%) and trees (30.2%) were the most commonly cultivated plants. Conversely, limited space (49%) and busy schedules (34%) were identified as the main barriers to home gardening. The findings indicate that the motivation for owning gardens aligns with the autonomy need of the self-determination theory. In contrast, the relationship need, which correlates with environmental motivations, was notably low among residents. The study recommends that local authorities, civil society organisations, and neighbourhood planning committees implement aggressive sensitisation and education campaigns to promote the environmental benefits of domestic gardening.