Hi all,

every year I have had problems with rose slugs (sawfly larvae)
and spend the early part of summer picking and squishing.
Eventually I give up, but they don't -- they continue to
munch away and end up skeletonizing the leaves of their
fave roses.

I was wondering if an application of dormant oil in the
Spring would help smother the larvae -- on the canes
and on the surrounding earth. Any ideas, opinions?

Thanks,
Laura