In article , Stewart Robert Hinsley
writes
Goat willow (Salix caprea). It produces catkins in early spring.
However, willows are notorious for causing damage to foundations and
drains. Goat willow isn't as bad as some, but I don't think you want it
there.


Oh I would have said wild apple or cherry tree? Grows in my pots all
the time.
--
Janet Tweedy
Dalmatian Telegraph
http://www.lancedal.demon.co.uk