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Discussion id : 115-964
most recent 31 MAR HIDE POSTS
 
Initial post 31 MAR by Storms
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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Discussion id : 113-673
most recent 25 OCT HIDE POSTS
 
Initial post 22 OCT by Margaret Furness
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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Reply #1 of 4 posted 23 OCT by Andrew from Dolton
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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Reply #2 of 4 posted 23 OCT by Margaret Furness
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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Reply #3 of 4 posted 25 OCT by Patricia Routley
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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Reply #4 of 4 posted 25 OCT by Margaret Furness
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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Discussion id : 110-701
most recent 13 MAY 18 HIDE POSTS
 
Initial post 13 MAY 18 by Margaret Furness
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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Reply #1 of 2 posted 13 MAY 18 by Andrew from Dolton
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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Reply #2 of 2 posted 13 MAY 18 by Margaret Furness
Thank you.
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Discussion id : 95-591
most recent 1 NOV 16 SHOW ALL
 
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.
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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.?
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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
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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
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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.
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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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