Apricots are easier than peaches but harder than plums. Like peaches you need the temps to be 70s-80s highs or callousing can be difficult. These higher temps come later than normal apple grafting time so as @Vohd mentions the window is later. You also want a complete seal on the scion, they take longer to callous and can dry out. I don’t think the type of graft matters much as does the temps and after care. If its too hot, put aluminum foil around the graft and scion. I tend to do that for all my peach and apricot grafts because they are later and it helps even out the temps on them.
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