ACDC is a phenotype of the high-CBD strain Cannatonic (also known as the CBD Queen) that was selected by Dr. William Courtney after receiving a packet of seeds from its original breeder, Spain-based Resin Seeds. The resulting ACDC, which is only available on the market as a clone, is exceptionally high in CBD, with a 20:1 CBD-to-THC ratio, according to testing from SC Labs. Resin Seeds describes the plant’s aroma as a mix of cherry, diesel, gas, and Mandarin peel. Myrcene is a dominant terpene in ACDC.