When Cali Connection crossed Mendo Purps and SFV OG Kush, two legendary California strains, they created Blackwater (or Blackwater OG), a hybrid strain named after a popular song of the same name by the Doobie Brothers. To create feminized seeds, Cali Connection uses Mendo Purps and Tahoe OG S1 instead of SFV OG Kush, but the resulting plant maintains highly resinous, purple-hued buds regardless.

The strain is said to produce a floral and citrusy flavor with hints of coffee, honey, and pine. Blackwater won third place for Best Indica at the 2014 High Times Medical Cup in Los Angeles.