Complete genome sequence of <i>Roseomonas</i> sp. WA12 isolated from the rhizosphere of <i>Artemisia ordosica</i>

We report the complete genome sequence of <i>Roseomonas</i> sp. WA12, a strain isolated from the rhizosphere soil of <i>Artemisia ordosica</i>, which is grown in Jungar Banner, China. The genome consists of a circular chromosome (4,787,499 bp; GC content: 69.70%) and three circular plasmids, which are named plasmid A (731,044 bp; GC: 66.04%), plasmid B (219,984 bp; GC: 65.08%), and plasmid C (44,809 bp; GC: 67.83%), respectively.