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Old 15-07-2013, 08:20 AM posted to rec.gardens
David Hare-Scott[_2_] David Hare-Scott[_2_] is offline
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First recorded activity by GardenBanter: Sep 2008
Posts: 3,036
Default Roses - Does Anyone Know What This Is?

wrote:
I'm not sure if this is bugs leaving/infecting, bug's laying eggs or
just diese... however it's not treating my roses nice. Does anyone
know what this is and how to treat it? 3 pics below, far, close and
closer....

http://i46.photobucket.com/albums/f1...ps9f52cc73.jpg

http://i46.photobucket.com/albums/f1...ps03a76ff4.jpg

http://i46.photobucket.com/albums/f1...ps75ae38c8.jpg


This looks very much like a chewer has been at work. Have you searched
*very* carefully the leaves (underneath too) and stems for a grub or
grasshopper, there are some whose camo is very good and they are hard to
spot even if you are looking at them. Pic #3 would give the best
information as it is closer but sadly it is out of focus which makes things
harder. There is a rose sawfly larvae that does damage a bit like you seem
to have so find some internet images of them and their damage pattern for
comparison.

Regardless of the leaf chewing they look rather spindly and under-developed,
at mid summer the leaves ought to be more lush. Several possibilities.
One, the pot is too small and it dries out too quickly and will not support
a decent sized root ball, so it will be stunted. I suggest this winter
pruning the tops down by half and potting on to a bigger tub. Two, it
doesn't get enough sun. Is it on the sunward side of the house? Three, it
is underfed. Roses are heavy feeders as they make huge amounts of new
growth every year.


D