I've been perusing Kevin's website (edible forest) and notice he sells
a bunch of apples on M111 with an M9 interstem. I've seen this before,
mostly from the late lamented Bear Creek. I was wondering what the
advantages and disadvantages of this rootstock combo are. Obviously,
some of these attributes are relative - any tree is likely to mature
larger here in zone 6 than in zone 3. But:
How big does it grow?
How fast does it fruit?
How much support does it need?
How badly does it sucker?
How much coddling does the resulting tree need?
Any other striking features - good or bad?
I'm specifically thinking of buying an Ashmead's Kernal to be planted
in eastern Mass. (zone 6) but I've wondered about this rootstock before
so the question is more general.