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Questions, Answers and Comments by Category
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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.
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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.?
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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
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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
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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.
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Kim wrote that RRD is not a problem in Calif. Not sure about DC. Message him with pix
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Initial post
24 OCT 15 by
EFR
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Please see attached photos of a sick Iceberg rose in our garden.
All other Iceberg roses next to it are very lush and healthy.
Can you please suggest how to deal with this issue?
I live in Melbourne Australia. We are now (late October) at the end of Spring.
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Take a close look at the stem - and graft. It is not being strangled is it?
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Reply
#2 of 2 posted
24 OCT 15 by
EFR
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Yes, it is very tight, but the same applies to all the other roses. So I am not sure if this is the reason. Regardless I will loosen all the strings that tie the roses to their posts.
Thank you.
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My Mothersday Polyantha looks bad and the other roses I have look good. It looked very healthy early in the spring but now some of the leaves have brown starting on the tips and then advancing further up. Also, the leaves look tattered, like a wind blown damage. I am wondering if Polyanthas are susceptible to hot temps early in the season which is what we have had. This rose looked bad this way last year when we also had unusually high temps early but I had transplanted it the prior year so I thought that was the problem then. Now I am perplexed as to cause. I wondered if anti disease sprays could cause this damage but none or most of the other roses do not show problems with sprays and it had shown no problems in the past. I have added insecticide spray to my regimen but as with the other spray, none of the others have had problems. I spray in the evening also. Any helpful suggestions or knowledge of polyanthas?
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Has anyone successfully grown ' Master Hugh' in part shade or does it demand full sun?
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My first encounter with Master Hugh was at Vintage Gardens. It grew in the jungle of roses, under large trees and it didn't appear to be unhappy about it at all. I would think that as long as it receives the six hours of sun average in your Australian climate, it should be fine.
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