Main ambition of wireless sensor networks (WSN) is to exploit network lifetime and stability periods. Flower Pollination Algorithm (FPA) is uses to elect the cluster head (CH) in set up phase of WSN such that the intra cluster average distance between the member nodes and their respective CHs is minimized and the sum of ratio of residual energy of alive nodes in cluster or energy level of CH is also minimized via maximized. In the research, a Flower Pollination Algorithm based Energy Efficient Routing Protocol (EERPFPA) has been proposed to apply FPA the problem of electing the CH in the cluster set-up phase based on minimizing the intra cluster average distance between the member nodes and their CHs and minimizing the sum of ratio of remaining power/energy of active sensor nodes in cluster to energy/power intensity of CH. It efficiently maximizes the network life time and improves the stability period. In this paper, the simulation results are showed by using MATLAB. The results showed that the proposed algorithm is more energy efficient and more reliable in clustering process as compared to WSN with Harmony search algorithm (HSA) for heterogeneous networks.