Pectobacterium colocasium is a recently named, narrow-host-range phytopathogenic bacterium causing soft rot of taro (Colocasium esculenta). It is found on the Chinese mainland and the island of Taiwan. Taro is a domesticated crop with a long history of cultivation in Taiwan and the Pacific islands. However, not much was known about Pectobacterium spp. from taro, especially from the islands in the Pacific. Herein, we report a high-quality, completely annotated genome sequence of P. colosacium strain F1-1. The 4,816,345 bp genome, which was assembled with Illumina and Nanopore reads with 217X and 311X coverage, respectively, consists of one chromosome and no plasmid. This completely circularized genome will aid future studies in comparative genomics, evolution and pathogenicity of P. colocasium. This genome resource will also be helpful for developing strategies to control P. colocasium in taro.