Purple Sour Diesel is a potent sativa-dominant strain with the genetic makeup of an inbred Sour Diesel sativa and an indica known as SR71 Purple Kush – itself a blend of original Hindu Kush and Purple Afghani. With a sativa/indica ratio of 70:30, it delivers a major energy boost with a heavy dose of euphoria and creativity. The high is intensely cerebral, with more limited body effects, though the strain is quite relaxing physically. THC levels reach as high as 21% in this strain, putting it in the top tier of powerful strains. Purple Sour Diesel is an especially effective treatment for long-term pain, as well as anxiety and depression. It can also be used to relieve nausea and induce hunger, and despite its sativa background, many patients find it helps them sleep. This strain has a sour, fruity aroma similar to sour grapes, along with a pungent earthy flavor. The buds have a dark purple appearance and are covered in a thick layer of trichomes. Like other diesel varieties, this strain has a distinct diesel flavor and smell. Purple Sour Diesel is most popular in California, Washington, Arizona, and Michigan.