I wonder if anyone could help me decide on which tree to get for my back
garden. I need something to provide a bit of shade, and give some sense of
shelter, as it's a rather exposed coastal site. The soil is very alkaline
and below the shallow topsoil, is stony clay. The site gets fairly windy,
especially in winter. There is lots of sunshine in Summer. It's in the
South West of England with typically only a few nights of frost each year.

I want a tree that will only grow to about 12ft high absolute maximum, so
that it won't obscure the views from the upstairs window. Ideally the
braches will spread outwards for around 8 feet from the trunk, providing a
canopy of dappled shade on a summer's day, that can be walked under without
much obstruction from the branches.

I'd like something that is interesting and attractive, all year round. I
don't want anything too common, such as an apple, pear or cherry, unless
they are the only sensible option. It doesn't have to be a fruit tree.

I'll be planting it about 10ft from the rear of my house, in front of some
French windows that face East. The tree will get full sun for several hours
each sunny day.

I have wondered about a palm, because of the exotic feel they create, but
they seem to be expensive and slow-growing.

Something that develops a twisted, interesting-looking trunk would be
preferable to something with a boringly straight, smooth trunk.

I'd be looking to buying a sapling that is already about 8ft to 10ft tall -
one which would grow outwards, mostly and not gain too much additional
height.

Can anyone suggest anything?

Thank you,

Al