22,795 Garden Web Discussions | Roses
I have my JC for four years now, and it has been an under-performer: although not the worst offender, it blackspots heavily, and, because it is not the most vigorous bush, it remains quite small in size (probably due to blackspotting). I know it can be a spetacular rose, but haven't figured out how to keep it happy without spray.
Here's an Ascot report from another climate. I have to admit that after reading this and some other discussion, I was second guessing my order of Ascot this spring.
I am thrilled to say that Ascot loves New England. Mine is grafted on Multiflora from Palatine. So far it's a medium-tall, well shaped plant with many, many blooms. I'd describe the habit as more shrub like than Hybrid Tea. First flush is nearly over now, and new buds are forming. Foliage is plentiful and healthy (I do spray for BS).
In my garden where everything that's supposed to be red or purple is pink, Ascot is a standout red. It's on the magenta side of the spectrum but the color stays true and doesn't lighten. The blooms have even held up pretty well to rain, and we've had plenty.
Thank you nanadoll for inspiring my choice. I just may get a couple more for my front yard to replace a certain under-performing David Austin!
Ratdogheads: I was thinking the SAME THOUGHT TODAY:
you said " everything that's supposed to be red or purple is pink, Ascot is a standout red".
I've been disappointed in so many red roses but Ascot is a great one!
Glad it is doing well for you.
Slow on the 2nd flushâ¦seems to be building up size now. The first flush lasted almost 2 months.
Susan
I am a Dentist practicing in Delray Beach, Florida!
Here is a link that might be useful: Delray Beach Dentist
You could try painting the infected areas with 3 % drugstore hydrogen peroxide. In addition to possibly actually killing whatever it is, it should help booster the plant's immune system.
Aspirin tablets placed in the ground may also help with the immune system.
http://forums2.gardenweb.com/forums/load/roses/msg0610421011109.html
Here is a link that might be useful: aspirin thread
I'm in zone 8 in East Texas so we don't have really harsh winters. We do get below freezing but not a lot and it's easy to move pots in the garage during those times it does freeze. Seril I'm glad you did post that picture! It's funny how one certain rose can capture your heart thru a picture.
Just a note to Marty's caution: It is not just Knockout roses that can get Rose Rosette Disease (RRD). Just about any rose can get it (in fact, I'd guess ALL roses can get it).
Knock Out Roses are NOT more susceptible to RRD than any other rose.
Keep an eye out and if your rose starts growing really ugly witch's broom type growth or something like that, take a pic and show it here. We can probably help you identify whether or not it is likely to be RRD. No point going into a panic over everything that can happen to a rose and assuming it is RRD. Make sure it is diagnosed correctly first. If it is RRD, then, yes--you will probably have to destroy the plant as Marty says.
I have lost about 1 rose per year to RRD for the past several years. None of the lost roses was a Knock Out.
Kate
The following was stated: "Just a note to Marty's caution: It is not just Knockout roses that can get Rose Rosette Disease (RRD). Just about any rose can get it (in fact, I'd guess ALL roses can get it).
Knock Out Roses are NOT more susceptible to RRD than any other rose. "
H.Kuska comment: The above may be correct, but it also may not be correct. Controlled research is needed. One way that it may not be correct is if a certain type of rose all have another virus. The first virus may make it easier for the rose rosette virus to overcome the immune system. This is a quote from research titled:
"Fate of artificial microRNA-mediated resistance to plant 1 viruses in mixed infections"
"However, when the plants were pre-infected with these viruses, TuMV was able to co31 infect 12-4 plants pre-infected with TRV, CaMV, and, particularly, with CMV. So, pre32 infection by another virus jeopardizes the amiRNA-mediated resistance to TuMV."
http://digital.csic.es/bitstream/10261/93508/1/Martinezetal%20Phytopathology.pdf
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Is there any evidence to suggest that this occurs with successful rose rosette infections?
Yes, there is: 1) Early on infected multiflora rose was found to also be infected by a cryptic virus (H.Kuska comment: which is transferred through the seeds).
http://www.sipav.org/main/jpp/index.php/jpp/article/view/664/451
AND
2) Recently rose rosette infected roses were reported to also be infected by Blackberry chlorotic ringspot virus (BCRV). See the following quote: "The case of Blackberry chlorotic ringspot virus (BCRV) is of particular interest because the virus has been found to be an integral part of blackberry yellow vein disease and is widespread in rose plants affected by rose rosette disease." (H.Kuska comment: BCRV is also transferred through seeds.)
http://apsjournals.apsnet.org/doi/abs/10.1094/PDIS-08-13-0866-RE
It depends on if you are trying to control their size or not. If you want to keep them smaller then dead heading time is a good time to prune back deep. I've seen KOs cut in half with hedge clippers by mow and blow guys and they bounced right back and re-bloomed beautifully.
We have rose midge in Illinois.The second year was the worst for me. Not a bloom in sight very depressing indeed. That was the last time I used insecticides in my garden. Apparently the good guys were able to establish them selves as damage now days is very limited. May be my imagination but it seems after spider mites have a good year rose midge infection is way down for a while. I did try every thing ever suggested here to get rid of them. In the end the only thing that worked for me was to let mother nature take care of it. She's done a pretty good job. Best of luck too you.
As always, Kim generously shares expert advice. Just to say GC does well here & wondering what else may be going on in your garden. You don't mention the amount of sun your GC receives - could lack of sun exposure be a factor in GC's health & be keeping that area more damp? Do you have a mulch there holding too much water itself? How do you provide watering - sprinklers, drip, by hand, on what schedule & time of day or evening? If mechanically, could there be a malfunction? Any dips in the lawn or bed, gutters or downspouts slanting more moisture towards the rose? Is the area getting too much water? Is the rose itself getting too much or not enough? Any underplantings holding & releasing moisture? Any of these & more could impact the individual situation & immune resistance of your rose negatively, attracting bugs & disease.
Thinking over any contributing factors may help you rearrange & solve your puzzle. You might try a diluted seaweed spray foliar & root feeding to help boost CG's health. Consider temporarily removing any mulch & later replacing it with fresh, as it may be saturated with spores.
This garden is likely as humid as yours - seldom under 75% & usually closer to 95% in Summer, with frequent rainstorms. The CG here grows in a mixed perennial bed in an ESE exposure 8' out from the front porch. Gets 7-8 hours of sun from midmorning to late afternoon, in clay-based loam amended with gypsum & compost years ago & topped yearly with compost in Spring & oak leaf mulch in Fall. Compost doesn't touch the stems & mulch stops 8-10" inches from them until dormant in cold. Believe these conditions contribute to GC's good health these last 9 years with no antifungal treatments.
Troubleshooting is usually tough but necessary. Was your rose doing better till recently? If so, what's changed? Small changes often have big impacts. Put on your detective hat...
This post was edited by vasue on Fri, Jul 11, 14 at 12:59
Thanks for such thoughtful responses. This is the second year in the ground for GC and last summer it was spotty and disease prone as well. Glad someone pointed out that another rose might have the same problems in this spot, I wouldn't toss the rose before trying it in a different spot but I'd hate to keep rotating roses and seeing no improvement. I made some little changes and am hoping it starts to do better.
Though the spot gets a generous amount of sun (7-8 hrs) I think there were some factors making it more damp than the beds my other roses are in. The grass along the edge was very close and in some places directly underneath the canes. The pergola has a wisteria growing over the top putting the rose, though itself in full sun, on the edge of damp shade. I edged the new, wider bed with stone and pea gravel. We'll see!
Thank you! These are all beautiful! I'm kinda nervous so I think I'll research them all and see which one is best for me. I'm not to picky about scent or color. I think most all roses are beautiful. I'd like to go with the least demanding, since I'm new to roses. I'm also new to this forum so it's exciting to see responses, I didn't think I'd get any!
I'm not in Florida, but I think perhaps that most (if not all) of the Tea-Noisettes* would do well there. If you have root knot nematodes in your soil, look for them (and any other rose) grafted onto 'Fortuniana'.
*Note that many nurseries don't have the category of Tea-Noisette, and you'll find these roses under either Noisette or Climbing Tea. If you do an advanced search on HelpMeFind for Tea-Noisette, you'll find the roses that are put into this unofficial category. You can also take a look at Rogue Valley Roses' inventory of Tea-Noisettes to give you an idea.
:-)
~Christopher
Here is a link that might be useful: Tea-Noisettes at Rogue Valley Roses
I found this rose a few weeks ago at earl may and just had to have it. I am just in love with it already! I can't wait for mine to bloom. (there were several at the nursery with blooms but I didn't buy one with any)
Thanks for sharing your picture! It's just lovely. I am also looking forward to seeing how this overwinters!!
And, it makes healthy, vigorous babies with a wide variety of pollen. For anyone considering trying their hand at pollen pimping, this is a good one to start playing with. Kim
Yes, I had that one in a pot. Tons of blooms. Really nice plant - I gave it away once I found my passion for heavily scented roses. :)
Yours looks great!!
Carol