Recent advances in communication networks have spurred interest on the definition of efficient self-configuration protocols. Such mechanisms are particularly of interest on the rapid deployment of wireless sensor networks whose nodes are characterized by their low computational and energy resources according to the green networking principles. In this paper, we introduce an adaptable fuzzy-logic assisted configuration mechanism for ZigBee networks; one of the most promising standards in the area of wireless sensor networks. Our results show that the use of fuzzy-logic principles can significantly improve the operation of tree-based routing mechanisms by reducing the set-up network time and the number of router nodes in the network, thus allowing a reduction in the energy consumed by nodes. © 2011 IEEE.