Chem 91 (Chemdawg ’91) Genetics: Unknown OG lineage Breeder: Clone-only (East Coast origin) Type: Hybrid (Sativa-leaning) Dominant Lineage: Chem / OG foundation stock Genetic Overview Chem 91 is a legendary, clone-only cultivar that serves as a foundational pillar of modern cannabis genetics. First circulated in the early 1990s, this cultivar is widely credited as the progenitor of the Chemdawg, Sour Diesel, and many OG Kush-derived lines. Its exact genetic origin remains undocumented, contributing to its mystique, but its influence is unmistakable across fuel-forward, high-potency cultivars. Primary Terpenes: ß-Myrcene ß-Caryophyllene Limonene Aromatic Notes: Diesel fuel and solvent Sharp chemical funk Earthy pine and sour citrus undertones