High Cbd Low Thc

High CBD Low THC classifications describe cannabis cultivars where cannabidiol content significantly exceeds tetrahydrocannabinol, typically with CBD:THC ratios of 20:1 or higher. This chemotype emerged from selective breeding programs beginning in the early 2000s, driven by research interest in cannabidiol's pharmacological properties and regulatory interest in non-intoxicating cannabis. Lineage records frequently report crosses between high-CBD hemp genetics and established cannabis cultivars to stabilize desired cannabinoid profiles. These materials became foundational to medical cannabis breeding in jurisdictions permitting research and cultivation. The classification has expanded to include diverse genetic backgrounds, from Sativa-leaning to Indica-dominant expressions, though cannabinoid ratios remain the defining characteristic.

Breeders working in this category select for stable CBDA-dominant chemotypes while minimizing THCA accumulation, often employing test-cross strategies and marker-assisted selection where available. High-CBD germplasm serves as parent material for developing balanced 1:1 CBD:THC cultivars and as a genetic resource for understanding cannabinoid biosynthesis pathways.