Blackwater by the Cali Connection Marijuana Seedbank.

The Cali Connection once again bring you some of the finest cannabis seeds in the business. Based mainly on genetics from the Californian Coast, USA. These guys marry the finest marijuana strains with their favourite OG Kush legendary strain, to produce some of the finest pot or weed seeds with rare genetic material not usually available to seed collectors. In the growing collectors market place this is sure to make Cali Connection popular. An priginal Mendo Purps by OG Kush cross this strain really does pull no punches, producing some seriously purple OG Kush.

or as the guys explain it:

"First generation Mendo Purps x SFV OG Kush F3 [m]. This is named after one of my favorite songs. My goal on her is to achieve one of the darkest Purple OG Kushes there is.."