I have a four trunk clump of trident maple from an air layer that I separated 3-4 weeks ago. It has lots of new growth sprouting on it so I believe it has rooted well in it's pond basket. Unfortunately I did the air layer too low, so there is about 4" of single trunk below the 4 branch split where the nebari should be. I will need to do another root layering further up to get the roots where I want. For this layering I'll probably use a pot instead of a bag so it could stay on over the winter if need be. Is it too late to start a second air layer on this now? Should I wait until spring?