I am thinking of grafting a mandarin on a citrus tree that is most probably a grapefruit, but not sure. As I understand, they're compatible as both a citrus trees.
My question is - can I graft a bud and with a cleft onto the same tree at the same time? I'm pretty new to this and I want to increase my chances. I probably won't have another source of scion later, and I wonder how much stress is this going to put the grapefruit in if I graft two times essentially?