Starting next spring, I want to start doing some experimental interstem grafting. Mostly for my own amusement, but if I get a good combination, great. I have a few questions.
- Most interstem apples I see have M111 root with a dwarfing interstem. Is there a huge benefit to using M111 over a seedling apple, whether Antonovka or generic?
- Are there patent issues? I assume the Malling rootstocks are way out of patent. What about Bud9 or the Geneva rootstocks? If I buy those to grow out for interstems is that an issue? Or is there a certain way I can legally use them, like buying the rootstock and using only the stem of the rootstock itself as the interstem?
- Is it better to try to graft all three parts at once, or graft the interstem to the rootstock, let it grow out, then graft the desired variety next season?