Type I Type Ii Type Iii

Cannabis chemotypes are traditionally classified by their cannabinoid ratios, a system developed to categorize plants by their primary psychoactive and non-psychoactive compounds. Type I plants are commonly associated with higher THC relative to CBD, Type II plants typically express both THC and CBD in notable quantities, and Type III plants are often tagged as CBD-dominant with minimal THC. These classifications emerged from early cannabinoid research and remain useful in breeding programs, though modern genetics frequently express complex ratios that don't fit neatly into these three categories. Lineage records and breeding databases often reference these types when tracking cultivar development and cannabinoid inheritance patterns.

Breeders working in therapeutic and regulated markets use Type I/II/III classifications to select parent plants and predict offspring cannabinoid profiles, though actual expression depends on genetics, environment, and post-harvest processing. Understanding these chemotypes helps breeding programs maintain consistency and develop new cultivars targeting specific cannabinoid ratios.