Hey everyone; the idea of rootstocks were unknown to me before I got into this world but are very interesting to me. Some ones that I've heard about while browsing the forums so far include yangmei on wax myrtle, loquat on quince, pomegranate on crepe myrtle, all the types of stonefruits, citrus, .. what are some interesting grafting options for rootstock plants that are a bit easier to come by, bonus points if its cold adapted