Streptomyces caelestis is a bacterium species from the genus of Streptomyces which has been isolated from soil in Utah in the United States. Streptomyces caelestis produces desalicetin, isocelesticetin B, caelesticetin, citreamicin ø A, citreamicin ø B, citreaglycon A and dehydrocitreaglycon.