An addendum to my own previous answer to Shiva:

I belatedly recognized the meaning of "Biological Control Agents of
Multiflora Rose, Rosa multiflora Thunbergh" at
http://www.wvu.edu/~agexten/ipm/weeds/multiflor.htm -- he's not talking
about controlling pests of Multiflora Rose, he's talking about controlling
Multiflora Rose by using biological controls, one of which is the rose stem
girdler, Agrilus aurichalceus.

I think the above was written by the same man who took the pictures at
http://www.forestryimages.org/browse...=4251&start=1, which I
previously posted in the hopes that Shiva might be able to ID her rose
borers.

Having proved once again that "a little learning is a dangerous thing," I
think it's time for something "new & different" (to misquote Monty
ython -- in my case, it's different, but not so new: WordRacer -- if any
of you happen to be fellow aficionados, look me up, you'll know me when you
see me!)

Anne Lurie
Raleigh, NC


"Shiva" wrote in message
s.com...
I need some help understanding and identifying the kind of borers I
have. Because early on (years ago) Baldo Villegas posted that
generally these creatures are not generally harmful, I have paid
little attention to mine, assuming they would just use the last
half-inch of the cut canes for a place to lay their eggs.

But I am seeing a LOT of borer holes--big wide ones in the ends of cut
canes, almost exclusively on my grafted roses. (Perhaps my ownroots
are too young to have thick enough canes for their liking?)

And recently there was discussion on Gardenweb about a kind of borer
that is not harmless, but bores all the way to the bud union and kills
the plant. How can I tell which kind I have and if I can't does it
mean I have to seal all the holes?