Grafting if it, okay! I've not done that before, I will go and research proper methods. Having multiple varieties on one trunk sounds like fun.
Are the off-shoots "big enough" to graft to, or should I wait a little longer? The one with aphids only has two from the same bump on the trunk, while the clean one has 7 all over.
Is there any concern for disease in the rootstock plant, given that the grafted portions went dead in both plants? I wasn't sure if these are aphids, but doing a search, aphids can be a multitude of colors, including brown.
So many questions, sorry.