I've broadened the question beyond just vine maples, which I am specifically observing in nature, and thus my question. I realize the standard/common/default answer is shade and it matches what we generally see, that is vine maples grow under an evergreen forest canopy. OK I get that, but I'm...
Another spring is here, so I went back to the woods for larger stock this time, to basically start all over. (No more bringing back 1/8" diameter stock, wow, did I really do that? Before I knew better, uhhh, yup, I did. Oh, and no I didn't just dump all those laughably small trees, I'm keeping...