Posted: 20/10/2013 at 13:08
This is something I have to do for a friend soon. Hers too is leaning and very congested.
What I propose to do is wait until the catkins have gone over in spring. Fun and games, but I will get under the tree and cut out some of the oldest branches back to the main stem. There will be quite a lot. Then I will look to prune back the remaining branches to downward facing buds. I want to try and recreate a "skirt" of light branches. Then I will try to stake it....probably with a couple of stout stakes. Really, if mine, I would have already pruned it every spring.
It's not the easiest thing to stake an already leaning tree....??ou will need another's help.