posted 7 years ago
I've heard that pruning the tree so that each graft has roughly the same amount of foliage can help preserve all the grafts.
I think (just my opinion) that selecting a tree where all the grafts are roughly the same size would also help initially.
Note: I can't speak from experience yet, I just bought two trees with multiple grafts a couple weeks ago, but I'm hoping to keep them all alive.
My opinions are barely worth the paper they are written on here, but hopefully they can spark some new ideas, or at least a different train of thought