Jeff Layman wrote in news:jid0rh$302$1
@news.albasani.net:

One alternative is to create a framework for climbers, rather than have
one tree. A single, sturdy, pole with a crossbeam top would allow you
to set the height and spread. One or more evergreen or deciduous
climbers could provide shade and flower at different times of the year.
You could even choose a fruiting climber if you wanted - if your soil
is as poor and chalky as you say, a grapevine wouldn't go amiss.


Thank you for the suggestion; I have to admit I hadn't thought of that. It
is definitely worth considering. Yes, my father grew grape vines locally in
the same type of soil.

Al