When grafting, the rootstock has to be a related species. The only other plant in the family of Cannabaceae would be the hops plant (Humulus). The hops plant has a rhizome which is a different kind of rooting system and is more likely to terminate the traumatized shoot and grow a new one rather then successfully graft. The best route would be to graft onto another cannabis rootstock, perhaps keeping one of your male plants(isolated of course) just in case, or sacrificing a weaker plant. I should mention however that I have never done this (nor am I an experienced gardener) I was just recalling a paper I read when I was interested in the topic sometime ago. |