I blow perfect smoke rings with ganja smoke. I just take a big pull from the blunt inhale real quick and while I exhale I blow O's. I been doing this couple years now It does take practice to get it down but everyone has their own way
no dif between tobacky and ganja for ring blowing.
The real trick is to blow a small slow moving ring and then fire a big fast one so that it splits the other one in two, and you end up with three smoke rings.