Balkus 9 was the inhabited ninth planet in its star system. It was home to two sentient species: a humanoid race and the Grafflax.
In 2381, Doctor T'Ana and Lieutenant jg Sam Rutherford visited Balkus 9 to collect medicinal ferns, with which to cure Lieutenant Commander Andy Billups' case of Porgian swamp rash. During the away mission, they were briefly trapped in a cave by a Grafflax protecting its offspring. (LD: "Caves")