Ficus sector was a region of space. The sector was located less than 90 light years from the Sol sector. (ENT: "Two Days and Two Nights") Ficus sector contained the Bringloid system and the planet Mariposa. This sector was adjacent to Sectors 184 and 185.
In 2123, the SS Mariposa departed Earth on a colonization mission to the Ficus sector. After traveling for decades, the Mariposa reached Bringloid V, where the first of two Earth colonies was established. Soon afterwards, the Mariposa crashed on Mariposa, with the survivors establishing the second colony.
Until 2365, Earth and the United Federation of Planets had no records of any Earth colonies established to the Ficus sector. In 2365, the Federation starship USS Enterprise-D responded to a distress call from the colonists on Bringloid V and delivered them to Mariposa, whereupon the two colonies were reunited. (TNG: "Up The Long Ladder")