Abstract: Kandyan Home Gardens (KHGs) are unique places where a waste number of biological diversity is harbored. The social structures that reproduce and transform by the study community and the KHGs are link together. On the one hand, without KHGs’ resources some social structures cannot be reproduced; on the other hand, the plant species, which are not connected to the structuration process is also very rarely be survived in home gardens (HG), due to home garden management practices of the dwellers. Any social structure is reproduced if the structure has power and resources to control and facilitate the society. However, the power of each social structure may be less or more respect to other social structures constituted to the place and other places. In addition, it changes according to time dimension too. Each social structure does many projects to ensure its power and resources. It leads to reproduce the social structures of the place dialectically. In this sense, biological diversity of KHGs is a result as well as a cause for dialectic reproduction of social structures.