I have a leggy Japanese maple that I hve let grow out while I was sorting out the roots (ground layering) and I now need to get the growth back to where I want it. The tree is now 6' plus and I want a tree around 40-50cm. This will mean cutting it to around 20cm at a guess. To add to the trouble, it's a 5 trunk clump so I will be cutting 5 sections off.
My question is, to avoid as much die back as possible, when should I hack this tree down to a transportable size?
Here is how it looks this morning.