Cannabis ruderalis is considered a wilder or more feral sub-species of cannabis and is known for its lower THC level. Sativa, indica and ruderalis all readily interbreed. Characterized by its autoflowering process, it produces flowers along the branches and stems based on life cycle rather than light regimen. This sub-species is native to the northern plateaus of Russia and the countries to its east.
- Cannabis ruderalis at Wikipedia
- INDICA SATIVA BUT WHAT ABOUT RUDERALIS (January 26, 2013), Cannabis.com