Sorry to repost, but this berberis thing is bothering me, so in case
anyone kind with an answer missed it first time round, here's the
problem.

I have a well established bronze berberis. The last couple of years,
every leaf has been eaten off by late summer. I think the culprits are
caterpillars, & I've noticed berberis in other gardens around here
(north London) having the same problem. What, if anything, can I do to
prevent it happening again this year ? (Short of picking the buggers off
by hand.)
--
Judy
http://members.lycos.co.uk/bluelotusrising/index.html
http://www.rigbys.demon.co.uk