Sour Diesel, also known as Sour D, is a Sativa strain of cannabis. It is a cross between 91 Chemdawg and a super skunk/northern lights. The strain produces a fast acting, cerebral high. Sour Diesel is easily identified by its extremely pungent sour scent as well as its uplifting, mood enhancing effects.
The origins of Sour Diesel point to a Chemdawg grower in Colorado who intentionally bred the strain and gave clones from the best plant to other growers. Others say the strain was a mistake, developed from a few seeds found in a large bag of Chemdawg that were grown and crossed with Super Skunk somewhere on the east coast.