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Questions, Answers and Comments by Category
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Initial post
31 MAR 19 by
Storms
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Has anyone had any success with taking a ground cover rose that spreads to 5'-6' and training it up on a trellis upwards and horizontally? I am going to try this with "Sunrise Sunset". this summer which spreads great on the ground this year.
Any help with your experience on training ground cover roses to a trellis would be really appreciated!
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What's the current thinking on whether insects can transmit rose viruses? I bought a plant on impulse from a big-chain hardware about 10 years ago, and discovered that it was on a rootstock that rose nurseries had stopped using several decades ago. And eventually realised it was virused. Because the plant is thriving, I chose to ignore it. However, two cutting-grown roses next to it are showing virus.
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I was always taught that anything that could penetrate a plants cell has potential to transmit a virus, whether it was an animal however large or small or your secateurs. How close are they, is there a possibility their roots could have become grafted together?
https://www.rhs.org.uk/Search?query=virus%20transmission
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Thank you for the info and link.
I don't prune much. Perhaps it's the rosella parrots sucking sap from red new growth...
They're about 1.2m apart. I don't know whether R indica major would fuse roots with an Austin or a 1950s HT.
I have a nasty feeling I'll have to hoick all three, and start again - after the mass of buds on Apricot Nectar are finished.
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Margaret, you might like to check out the Mosaic Virus section in the GLOSSARY. I have added part of the 1983 reference, which is certainly not “current thinking”, but it may help in making a decision re hoiking.
(I have just noted there is more to be read under: Rose mosaic virus RMV)
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Thank you. I think 1983 is too old to gamble on; the next rose in line is Mrs A R Waddell.
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Can someone tell me please: how close to old Juglans regia (common / English / Persian / Circassian walnut) trees can roses safely be planted? Are roses more or less sensitive to juglone than apple trees are? How long does the ground stay poisoned with juglone after a walnut tree is removed?
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If all the leaves are raked-up well in autumn most plants and the lawn will grow reasonably well near a walnut tree. What can retard a plant's growth is the dense shade the leaves cast rather than any poison they contain.
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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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