Hi, I have an McIntosh apple tree and the original graft is at ground level.  I want to graft another variety (Granny Smith) to this tree but it will be difficult to graft to the rootstock since it is flush with the ground.  Can I graft my new Granny Smith scion to the upper portion of my Macintosh tree and be ok or do I have to graft to the rootstock section?  I also have the same question for a cherry tree.  Would this be the same grafting to it when grafting a new cherry scion.

Thanks,
Dave

Hi Dave, welcome to Permies!  Ironic last name as far as the question goes  

Yes you can graft above the rootstock.  That's how they top work orchards over to the newest variety.  For a bunch of videos on it, search for "Skillcult" on youtube.  He does a bunch of grafting videos including some on his Frankentree which has dozens or maybe hundreds of grafts on it.

Hey Thanks for quick response and the answer.  Also the skill cut videos are amazing and just what I was looking for!!

Thanks again,
Dave

My pleasure!  Tomorrow I'm going to try my hand at grafting 12 varieties onto some of my trees for genetic safe keeping.