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Discussion id : 95-591
most recent 1 NOV 16 HIDE POSTS
Initial post 27 OCT 16 by timdufelmeier
Have you had a problem with Rose Rosette type symptoms ( without the redbroom formation):
Weird rootstock growth growing from the tops of normal canes, brown streaked or brown sepals, deformed, small blooms? I live in LA, Ca. and my 150+ rose garden has many casualties with these symptons. Noticed them in other LA rose gardens too. A friend in San Bruno (San Fran area) has complained of the same. Do not uses any pesticides nor fungicides.
Reply #1 of 5 posted 28 OCT 16 by Nastarana
Without seeing the damage, it sounds like herbicide damage. I found when I lived in CA that my roses had extremely low tolerance for herbicides, even spray directed downwards to eradicate Bermuda Grass would still cause RRD looking damage to roses. Do you live along side a county road which is heavily sprayed by the public works dept.?
Reply #2 of 5 posted 28 OCT 16 by timdufelmeier
Thank you for your response. Most people that I've spoken with have suspected chemicals also but I have never used fungicides insecticides nor Roundup. This problem seems to have been affecting rose beds all over La since mid-summer. I know the California Department of Agriculture monitor citrus trees in my yard which is dead center in the middle of LA I can't imagine that they would have sprayed without our knowledge
Reply #3 of 5 posted 28 OCT 16 by timdufelmeier
Kim Rupert thinks that the problem is Chilli thrips which have been a problem in Florida and Texas for a while and they affect ornamentals and crops. I have never seen anything like this mess on roses since I started gardening in the late eighties in Los Angeles. Expert had written him a solution involving several heavy-duty chemicals and I'm not sure I am up 4 dealing with the problem in that way
Reply #4 of 5 posted 31 OCT 16 by Steven Cook
Do thrips in general cause symptoms similar to RRD? I dug out a very common rose I didn't really like and am trying to convince a neighbor to dig out a Don Juan that he and I both like because they showed the over-vigorous but deformed growth exhibited with RRD. If it's thrips, I'm overreacting. After I told him about the RRD, and that it needs to come out, he instead cut it back by two thirds in the belief he can eliminate the infection.

I'd like to plant more roses, but if my neighbor is cultivating an RRD-infected rose and refuses to get rid of it, I'm wasting time and money and, I can't grow roses at my place. That makes me sad. If it's thrips, I'll deal with it.
Reply #5 of 5 posted 1 NOV 16 by timdufelmeier
Kim wrote that RRD is not a problem in Calif. Not sure about DC. Message him with pix
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