On 17/06/16 22:15, Roger Tonkin wrote:
I am about to move house, and in the garden is a magnolia which
hangs over the wall and obstructs the pavement.

It looks as if it needs a severe pruning asap, but I know
nothing about magnolia's. Where do I start?

You don't say which type of magnolia, and whether or not it is
evergreen. I don't know how they respond to severe pruning, but I didn't
think they liked pruning at all until I saw a garden with a 3m high M.
stellata was kept in a mushroom shape. It flowered better than any
unpruned stellata I had ever seen.

Just google "magnolia" and "pruning". You can start he
https://www.rhs.org.uk/advice/profile?pid=599#section-2

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Jeff