Botanic gardens have been evolving, responding to the changing needs of society, from their outset as medicinal gardens of monasteries and university gardens to more recently as organizations that contribute to the conservation of plant genetic resources. Considering that social and environmental issues are deeply intertwined and cannot be tackled in isolation from one another, a new challenge is now presented to botanic gardens: How can they redefine their purpose and expand their current roles in conservation, research, amenity and education in order to continue to be socially relevant? Empirical data regarding the impact of pilot community projects run by four UK botanic gardens show how it is possible in practice to address social, economic, political, neighbourhood, individual and group dimensions of exclusion whilst achieving public participation in plant conservation. This study presents the evaluation results regarding the outcomes of the Communities in Nature initiative which illustrated how botanic gardens can grow a social role and be socially relevant institutions that engage with their communities and address issues of social and environmental importance. Recommendations suggest that addressing social issues should target addressing the causes of exclusion as much as the effects.