So on the 30th March 2014 I repotted this maple I purchase a few weeks prior. I waited for the buds to start swelling but BEFORE the leave burst. You need to wait for the trees to send its energy it has been storing in its roots over winter up into the trees and its buds before you can re-pot (including cutting roots). The tree will then push out leaves and the leaves will start photosynthesising and sending foot back down into the roots, for this to happen the roots need to supply the leaves with water. If you cut to many roots off without reducing the foliage the roots will struggle to support the leaves and they will wilt etc.. The soil I used is 2parts Akadama / 2part Cat Litter / 1part Pine Bark
The rootball was rock solid, I couldn’t even put a chopstick into it. Most of the thick roots where doing laps around the outside of the pot. I cut some of the long thick roots but I didn’t want to cut off too much as I was not touching the foliage at all.
I tied the tree down using this method, much more secure that using 2 bits or wire. Remember to attach the tail wire for the last tie off.
This finished product. I will add some sphagnum moss to the surface to hold moisture in and help develop more surface roots to thicken up the nebari:
The buds broke around the 24th April: