I've been looking for good sources; that appears to be quite good. Now
trying to figure where to move apples to. My "clearing" here is
surrounded by black walnuts. I have two neighbors that greedily
collect the nuts. Years ago I left some squirrel-planted sprouts to
grow, about a dozen of them are now big enough for small boards.
I now have even stronger motivation to build raised beds. To prevent
root penetration I am musing about solid bottoms in the ferrocement
beds. For drainage, horizontal weep holes just above path surface.
That would also preclude moles.
A garden of really big containers. Who woulda thunk?