Update: RRD /RRV
Went to the above meeting. Unfortunately I arrived 30 minutes late because I was stupid enough in thinking that it is easy to get there. I have learned now, that even if it says on the instruction that it is very easy, always look in a zoomed in map of the lay out of the streets, so I will be familiar with the surrounding streets--now about what I have learned from the meeting:
Be familiar how the RRD looks like.
You can easily find lots of images if you search online under 'rose rosetta virus'. However, the symptoms do not appear early on. We need a very strong magnifying glass or a microscope to recognize the virus. They are invisible without them. They look like a tiny yellow or brown banana with whiskers on one end. The virus cannot fly, but they travel with the wind. There is no rose yet that is immune to RRD.
Dr. Windham told us what he does when he has new rose plants.
He plants them in a separate area of his garden in containers. After a year or two, if the roses are still healthy and he likes them, then he gives them their permanent places.
And also he advised us to be vigilant and examine the roses that we have, for any symptoms of RRD, if you notice one, best is to get rid of it ASAP, carefully dig the plant out completely, not leaving any roots--it may grow back, already infected-- and put it in a black plastic bag, tie the plastic closed and put the bag in the sun, so the virus will die and then dispose the bag with the dead rose plant.
RRD is not new, but it has spread quickly when mass planting of roses become popular, around the time when Knockout roses are available. The roses are planted close together and it makes the spread easier. The virus seems to like multiflora. So the roses grafted on R. multiflora are considered more susceptible to RRD but no rose is immune.
Best thing that we can do is learning to recognize them and there are lots of excellent articles about them. I just read
http://www.clemson.edu/extensi...
and
http://pubs.ext.vt.edu/content...
and I have learned a lot from them. There are many more that I have not read yet. I do not have my own photographs of an RRD afflicted rose bush, and I do not want to 'borrow' and post something copyrighted. But please familiarized yourself with how RRD afflicted rose bushes look and help control the spreading of RRD.