Chemdog, or Chemdawg, was created in the early 1990s in the parking lot of a Grateful Dead concert.
Dead concerts had a reputation for being trade centers for cannabis cultivars, and during this particular show, a breeder named Chem purchased an ounce of Dogbud from fellow growers P-Bud and Joe Brand. The flower — which supposedly originated along the California-Oregon border — tasted so strongly of chemicals that Joe Brand nicknamed it Chem. Chem (the breeder) combined the two names, and Chemdog was the result.
Following the Grateful Dead tour, Chem popped Chemdog the seeds and created three phenotypes. The most famous was Chem 91, which became an instant success and served as the parent strain for some of the most popular cultivars of the past 25 years.