In article , Arthur
writes

"Jaques d'Alltrades" wrote in message
...
But the roots will keep growing ...

No they won't, not if you keep the tree trimmed. They have no need to.

Not so. Even trees that have been regularly pollarded will grow massive
root structures over the years. The trunk increases in girth every year,
and so do the roots supporting it.

- Arthur




Ah well in that case it's back to the drawing board.............
--
Janet Tweedy
Dalmatian Telegraph
http://www.lancedal.demon.co.uk