21,401 Garden Web Discussions | Roses

R. multiflora, which Allen Lacey called "that vile weed" can be seen growing wild, or escaped, in thickets along the Hudson River. Huge loops of it hang from trees. Very pretty in flower, but it was only a matter of time till the RRD showed up in force.

The following comment was made: "And we don't know of any immune response to RRV except maybe in certain species, do we?"
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I would definitely expect an immune response to mite attack.
I also would expect an immune response (from very weak to complete immunity) to rose rosette virus which would vary in effectiveness depending on which variety, possibly temperature, possibly general health of the plant, possibly time in growing season, and other still unknown factors.
We do know of three examples of unexpected behavior. One is that graft transfers of the virus in multiflora are not successful after a certain date. A second is for one species of rose the virus can go down one cane but does not go up other canes. A third is that 20% or in some cases more of infected roses appear to cure themselve (go into remission) but then the disease returns (have a relapse).
"Q: Is the virus present in non-symptomatic tissue [on plants known to have been symptomatic]?
It can be. We have seen about 20 percent of newly symptomatic roses, lose all trace of symptoms. However, the symptoms always return and usually cover most of the plant. The plant then usually dies a few months later."
http://www.rosebreeders.org/forum/read.php?2,50305,50308#msg-50308
If the hydrogen peroxide treatment does work, it would be expected to word by enhancing the immune response.
The 2012 review article for which I have included the quote below may be of interest.
"Plants, however, lack specialized mobile immune cells. Instead, every plant cell is thought to be capable of launching an effective immune response. So how do plants achieve specific, self-tolerant immunity and establish immune memory? Recent developments point towards a multilayered plant innate immune system comprised of self-surveillance, systemic signalling and chromosomal changes that together establish effective immunity."
Here is a link that might be useful: link for plant immune system 2012 review
This post was edited by henry_kuska on Fri, May 10, 13 at 21:42

If the golden copper one was Lady of Shalott, I'd go back for it. Wonderful disease-resistant Austin, floriferous, and interesting color--if that is what its name was.
Dark Lady should be zone 5 hardy and is lovely, but I don't know about its disease-resistance.
Don't know about the Radlers.
Happy shopping!
Kate

Bubble Double is a light pink Radler shrub rose. It may have been registered in 2011 but I don't think it was available until just recently. I think I recall it being one of the new ones the nursery talked about at our meeting. It may be too new to find out much about it yet but being a Radler it's probably pretty healthy and hardy. The pics on HMF look nice. It has quite a few more petals than the KO line seems to.

Thank you for the replies!
The soil above the plant is terrible, but underneath I have a few feet of pure Miracle Gro soil for flowers and vegetables (which has peat moss and manure in it). The plants also get a lot of water and plenty of sunlight. If I were to stick my finger in the soil around the plant right now, it would be moist.
As for the type of rose, I actually lost track. It could either be Paradise Hybrid Tea Rose or Color Magic Hybrid Tea Rose. None of the other rose bushes are displaying this much red coloring, so it made me really worried. It makes me feel better to see so many of you say it is normal. Thank you, again.

Relax! Every variety has it's own growth habits. Some are green and others are very red in color. As the leaves age they'll probably green up more but even there some varieties do so quicker than others. There is nothing there that looks unhealthy.


The Round-Up can leave the roots of a treated weed, pass through the soil, and be picked up by the roots of nearby rose bushes. http://link.springer.com/article/10.1007/s11104-007-9387-1# AND http://www.sciencedirect.com/science/article/pii/S116103010900063X


This is what I live with also....holding my breath every day and panicking every time I see an anomaly or weird growth pattern on the roses. I almost feel paranoid at times....and over-diagnosing and worrying who will fall victim next.
My roses were hit hard last year and I took out so many mature climbers and HTs that I wondered at times if I was foolish to even grow roses. Two years ago I SP'd 'Tina Turner' and 'Gertrude Jekyll', but since they were own-root, I missed pieces of the roots and they have regrown and symptoms have not returned yet. I am hopeful but cautious.
This devastating disease has been the catalyst for the removal of a whole western rose garden, which is now home to dwarf conifers, heaths, and heathers. To replant roses in that section would be to ensure a death sentence for innocent roses.

That's just something that some people have said and others have repeated.
The virus may be living in root sections which could send up infected shoots. In that case, you would just dig it up promptly. Be sure you have cleared the old roots out for a reasonable distance around the new plant.
But the disease is not transmissible from the soil to the new plant.
The leading RRD researcher, Jim Amrine, says it is OK to replant.

I just noticed some of those circles the other day and wondered if they were from leaf cutter bees, how cool! I would love to see one at work, I'm always thrilled when I realize a new bug I've never seen before is a kind of bee.
Recently I was dead heading my Gold Medal and while deciding whether a somewhat faded bloom should be clipped a little bee came to visit. At first I thought it was a wasp because it was smaller than a honeybee and had a thinner body, but then I saw the furriness and small pollen sacks on the legs and I realized it must be some kind of little bee. I left the bloom alone.

At a feed store that has poultry supplies. One brand here is "Gran-i-grit". You want the "grower" size. A lot of poultry grit is crushed oyster shell--you DON'T want that--make sure it's the granite.
Dunno if you have TSC stores up there (Tractor Supply Company), stock it, but so do most plain old feedstores.
I just recently found a good source of pine fines. Hapi-gro "landscape mix" from Lowes store (again, don't know if the chain has stores near you, but bags of fines are often sold as soil conditioners to fluff up clay soils).
Good luck.

Hi Lynn, what you are describing is suckering, where a sprout from the original plant comes up in the ground away from the original plant. There are two types of suckers, one that belongs to the flowering part of the plant (and would be an exact replica of the main plant) or, if your rose is grafted, it could be the root stock coming up. The Knockouts I've seen are grafted, so I believe these are the root stock coming up.
You can remove these. I don't know if it's possible to move them to another location. What you want to do is dig down where the sucker is coming up from and find the root that the sucker is attached to and try to pull it from the root. If you cut it, it will likely grow back.
Unfortunately some roses continue to sucker and these growths have to be removed periodically. Especially if they are from the root stock, which is not what you want flowering in your yard.

I wanted to give an update on my aphid situation. My order of 5,000 ladybugs arrived in the mail today and they all look healthy and alive (and quite lady-like). I waited until it was almost dark out and I sprinkled them on all of my roses. I'm hoping that at least some of them will make a permanent home in my garden and keep those nasty aphids under control:)
Maude

You certainly can't plant it in that bed! As for the mix I'd would add some potting soil myself. But I'm really not familiar with that kind of mix to know if it would be good or not.
It will probably take it a good 4 or 5 years to reach it's maximum size depending on how much winter kill you get. But you can also prune it to keep it withing bounds as needed. When you dead head between flushes just cut a little deeper to keep it shaped.

Hopefully in 4 or 5 years, I'll have a place with a nice garden that I can plant it in. I guess until then, it will live in a pot.
Adding potting soil to that particular mix would defeat the purpose of it. Al has an essay on the science behind it posted somewhere on this site, and it seems pretty sound. Since it doesn't seem like anyone has tried it for roses and met with disaster, I'll give it a shot. If worse comes to worst, I'll try again with a more conventional potting mix. I'm very curious to see how it will work out. Now I wish I had ordered two roses, for a side by side comparison.

I spoke with an arborist that I used before to remove limbs and give my yard more sunshine.....
He said that the tree is a Modesto Ash and although the roots are somewhat invasive, I don't have to be too careful about removing some of the smaller roots. He also said that I may have to give the roses a little more water and food, but if I don't mind doing that, the roses will do fine there. They are not shaded by the tree.
I am very excited about the new babies. They will be:
Francis Meilland
Marilyn Monroe
Midas Touch
Stainless Steel
Sugar Moon
Veteran's Honor and
St. Patrick
Thanks for your responses,
ak






Strawberry, I believe it. I would love to get even 20" of rain in a year. Beautiful green Chicago. I remember the first time I saw Maryland in early fall. It looked like pictures of Ireland to me. I couldn't stop staring at all the green everywhere. I was thinking that I spend maybe 30 minutes a few times a year tying a straying cane in. Most of them are not straight up as yours are, they sort of are at a 45 angle but some do go upright. They don't freeze so the old canes harden a bit and support the new ones coming up. Right now there are loads of growth all along the cane with groups of buds forming at the tips like you would see on a climber. I had some tips of canes blooming earlier and now I'm getting the growth off the midsections of the canes. Some of those are a few years old and maybe after flowering, I will cut them out at the base and let the new ones come in. Yours looks so tidy with all the fresh new growth shooting up. Mine's a big old girl and is easily 6' wide and 5' tall. I water Abraham Darby next to her and the water flows downhill to Sonia so she gets most of it. Firefighter in front of Sonia seems happy with the water too. That's a good spot for perfume roses so I thought Firefighter would be a good plant there. I wondered if all of you were exaggerating about Firefighter, but I see that it's going to be a great fragrance rose.
Here's a little posy of sweetpeas and Sonia Rykiel
I agree with Kim, Jeri, and Kitty that Sonia is hard to grow without plenty of water. With water-hog I learn to prune hard, so the root is bigger than the top growth.
My limestone clay releases calcium when it rains here .. rain water is acidic, pH 5.6. Both calcium and potassium regulate osmotic pressure of cell membrane, for firm plant tissue. Salt in chemical fertilizer drives down potassium, so chemical nitrogen is a NO-NO for water-hog with droopy stem.
Check out the link below for this excerpt: "Under salt stress the osmotic pressure in the soil solution exceeds the osmotic pressure in plant cells due to the presence of high salt, and thus, reduces the ability of plants to take up water and minerals like K+ and Ca".
Gypsum (calcium sulfate), neutral in pH, supplies calcium. Roses Unlimited recommends putting 1 cup of gypsum in the planting hole. Gypsum is also used to de-salt saline soil/water.
Thank you, Kitty, for that awesome pic. of Sonia in a vase ... I love all the pics you posted. I checked with Ingrid whether her upright Bishop Castle is own-root, like my Sonia Rykiel ... Ingrid's Bishop Castle is grafted, but she prunes it down in spring and after it blooms.
Here is a link that might be useful: Salinity stress in plants and cytosolic calcium
This post was edited by Strawberryhill on Sat, May 11, 13 at 12:17