Sour Diesel, otherwise known as "Sour D" or "Sour Deez" is a sativa dominant hybrid strain with a 90:10 sativa/indica ratio. The origin of Sour Diesel is frequently debated within the marijuana community. Some say it's a cross between mass super skunk and 91 Chemdog, while others claim that it's a cross between Mexican sativa and a Chemdog phenotype.