Diesel
"Diesel" refers both to a terpene and aroma archetype — fuel-heavy volatile aromatics (caryophyllene, limonene, myrcene) with petrol and rubber notes — and to a family of strains tracing to Chemdog '91, reportedly grown by Greg Krzanowski from seeds found after a Grateful Dead concert in Indiana in 1991. Members include Chemdawg, Sour Diesel, Original Diesel, Headband, Stardawg, and Jet Fuel. Soma's NYC Diesel (Soma Seeds, Netherlands, early 2000s) is a separate Afghani × Mexican lineage distinct from the American Diesel line. The Diesel aroma profile became a connoisseur signifier distinct from Kush (earthy-pine) and Haze (citrus-spice) in the 1990s–2000s. Several breeders and High Times editor Danny Danko have hypothesized that Chem/Diesel genetics are parental to OG Kush, making the Chem line arguably the most genetically foundational of any modern lineage.