Good question, since most my tree's are in the ground and i prefer it that way because of my age.i have growing: salc,osborn,smith, negronne,d.k., chicago hardy, magnolia,stella and a couple other ones.
Unless i could find a to dy for variety i have to put in a contianer of which i have no idea what i could get from forum members. So to tell you what variety to look for, right now i have no idea.
For me it is a challenge to find the perfect set of varieties for zone 6b/7. I don't think there that many for in the ground varieties.I have a ton of chicago hardy and d.k rooted seedlings to be dug-up and giving away along with magnolia's. I just don't have the funds for shipping.I have given away to the local garden club much and now i am stuck with the rest.