grafted apple sapling
Thank you for your question about apple grafting. It is difficult to answer your question without knowing what type of graft you used, and how much you believe you need to cut off. Generally, you don't remove tissue, but there are a couple of different grafting techniques that allow for some reduction. Here is a link to an Extension article on propagation. Perhaps you can determine which method you used; the explanation of the technique may help answer the question. If not, please write back--with pictures, please!