Poorly Rose!

[Deleted]

Hi. My climbing 'High Flyer' has ben putting on lots of lush new growth. However, when I was watering it earlier I noticed that some of the new stms are yellow, rather than the characteristic red. The leaf buds on these stems look poorly. What is it and what can I do?! I fed it last month, and water regularly.

[Rosefriend]

Hi RM

My immediate thought was Black Spot which could kill the stem. Cut back into healthy wood and have a look at the inside of the stem - it will probably be a little brown.

There can be other causes as well but I would spray with a good herbicide.

As far as Herbicides and Pesticides are concerned I was taught that Roses should only be sprayed twice with the same product before changing and using something else.

I always use 2 herbicides and 2 pesticides per year for my Roses.

RF

[Deleted]

Thanks, RF. I have sprayed with perfect rose and cut back the yellow stems. I suppose it's a waiting game

[JennyWrenn]

I pruned late one of my roses - cant tell you what it is - but every year it is a stunner - yellow faded petals - dont last long but it keeps on flowering

BUT this year the stems are totally covered with white prickles loads of them - it looks quite ugly although some shoots are coming thru - anyone any idea what is happening to it

[Deleted]

rosemother said:

Hi. My climbing 'High Flyer' has ben putting on lots of lush new growth. However, when I was watering it earlier I noticed that some of the new stms are yellow, rather than the characteristic red. The leaf buds on these stems look poorly. What is it and what can I do?! I fed it last month, and water regularly.

Is there any chance you have over fed it?

[JennyWrenn]

Just been out to take photo of my sad looking rose

[Deleted]

jennywrenn said:

I pruned late one of my roses - cant tell you what it is - but every year it is a stunner - yellow faded petals - dont last long but it keeps on flowering

BUT this year the stems are totally covered with white prickles loads of them - it looks quite ugly although some shoots are coming thru - anyone any idea what is happening to it

I've just been reading about rose rosette disease - HERE

But I wonder if the stems you are talking about could be suckers

[JennyWrenn]

Oh dear it is going to die It is probably Rosette disease never seen anything like it before - I have had it about 12 years

No they are not suckers main branches - I cudnt think of the word for prickles - THORNS - must be too early in the day for me

[Deleted]

I found a bit more info on rosette disease Jenny -

www.ipm.iastate.edu/ipm/hortnews/2006/6-21/rosette.html

but lets hope it isn't that - perhaps someone else will be able to help you more once they have seen the photo you have posted.

[Rosefriend]

Hi JW

I must admit that your Rose doesn't look very happy and I wouldn't tip on the Rosette disease although anything is possible. I have never lost a rose to it at all.

Were there any leaves on the plant or are they further up, a picture of the leaves would help. There is Black spot there and probably rust. I would cut back into healthy wood.

If necessary I have cut roses back to just above the bud grafting and they have been marvellous. Roses are pretty tough plants.

As I say a picture of the leaves would help , if you have one.

RF

[JennyWrenn]

Thanks Rita hope it isnt terminal

[fozzie]

RM,
the problem you have is more than likely Black spot and RFs advice is the way to go. If you are going to use a fungicide then use one with one of the following Penconazole or Bifenthim alternate with Mancozeb to prevent resistance. Or if you want to be organic treat the plant and/or soil with a Sulphur based product. You may have heard me say "Never had a problem with Blackspot when a lad in London too much Sulphur in atmosphere, now we are smokeless Blackspot increased."

What have you fed your plant with? It may need a tonic.(NO GIN!)


Foz

[Deleted]

Hi Fozzie! I fed it with top rose, just a handful around the base. It has put on a lot of growth, could it be outgrowing it's reserves do you think? Can you recommend a good tonic? I lurve my roses! ;D

[fozzie]

JW,
Like RF I do not think it is Rosette, the new stems do not look much different from old ones, in terms of prickles. Are those the main stems becaise they do not look very big for a 12 year old shrub. Is it a Shrub, Climber or Rambler.
Again any chance of more pics re rest of plant?

Fx

[fozzie]

RM,
Toprose is fine I was just trying to see if she needed a specific nutrient, but all she needs should all be in toprose. Must be 'onest don't use it my self . I use Chicken Pellets as a general feed in the bed or border (early Spring and mid Summer for individual treatment I use Blood, Fish and Bone and sometimes Calcified Seaweed.

If you have cut those weak yellowish shoots out It should help the plant, despite what you may hear about Blackspot and leaves it will actually over winter on/in the stems. Damp humid environment = fungus= Blackspot so keep the plant "open" as possible to encourage good air circulation, a health plant is less likely to get Blackspot.

I know it does not look nice but unless its a major infection no perm damage will occur to the rose.

Fx

[JennyWrenn]

The shoots seem healthy enough



Here is the rose last year

[Deleted]

Oh Jenny, your rose really looks sad. I wonder if your rose was healthy last year?
You say that the stems are covered by white prickles. But the roses are supposed to have prickles!
By the way, the roses have actually prickles (outgrowths of the epidermis, the outer layer of tissue of the stem) the true thorn is modified stem which growth at a node and has nodes and internodes itself. (pyracantha has thorns)
Anyway my first thought was, before seeing the photo, scales. They are tiny insect that cover themselves with a shell appearing as a greyish bark on the stem.
After seeing the photo I would say that there is a big attack of some fungal disease. But there still can be scales too. Please look carefully at the thicker stem which is on the right side of the photo and scrape with your fingernail. Is it the just the bark brown or there is something on the stem? Also in the background there is a thin green stem with a shoot at the right. What is there at the joint?
Back to diseases, there are quite a lot of fungal diseases which attack the stems.
Your rose it seems to have all the stems attacked and in generally it has poor growths.
When you prune try to cut about 5 mm above a bud and don’t leave any stubs. They will dye back and will be a gate for the fungi to enter and infect the plant. Always eliminate from the base all dead and diseased wood. The other stems should be cut back to healthy wood. After pruning clean your secateurs with alcohol.
Are these all the stems or the photo shows only a part of the plant?
Anyway I would eliminate the brown stems and cut back to one or two buds the ones which are green even if they are not healthy and spray with a fungicide based on copper or mancozeb trying to save the rose.

[JennyWrenn]

Thank u RF - I have tried to scrape some of the brown bark away and nothing happens much - it doesnt seem to want to be scrapped and I now notice these prickles are now turning a better colour - previously they were a mass of white - it may pull thru - I will cut off the brown stems it grows very quickly and it seemed OK last year - many flowers

You cant pick this rose and put in vases a bit like Rhapsody in Blue - here today and gone 2moro - only there for a short while

j w x

[fozzie]

Jenny is it a medium/large shrub say 6/7 foot in both directions?

RF if you are there. When I first saw jw pic of flower I thought of a Kordes hybrid?? One of the Fruhlings maybe? It also looks like a rose I had many years ago called Nevada What do you think?

Fx

[fozzie]

jennywrenn said:

You cant pick this rose and put in vases a bit like Rhapsody in Blue - here today and gone 2moro - only there for a short while

j w x

This sounds very much Like R.Moyesii, a species rose, which is allegedly associated with Nevada.

I dont think you have any major problem with the shrub those shoots look quite healthy and it may well be Nevada

Fx

[Rosefriend]

Well Foz I am assuming with RF you mean Rosefan but just to add my bit, I think that R.Moyesii is a definite possibility and the thorns and shape all add to that direction.

The leaves look OK - there is an enormous amount of fungal disease there but I still think that it has a good chance.

RF

[JennyWrenn]

It grows to about 4 ft and is about 3 ft wide - I do hope it will be OK as the flowers are so lovely - I will keep u posted about it thank you for words of encouragement

Had a look at it today and the thorns are now no longer white they are a normal colour

jenny

[fozzie]

rosefriend said:

.
The leaves look OK - there is an enormous amount of fungal disease there but I still think that it has a good chance.

RF

I agree re fungal problem and that it has a good chance. The fungal problem must have been there for so time, by the look of it so, if that pic is last years flower then I still think it is not a major issue but does need some control.


Fx

[JennyWrenn]

So please recap again what do I need to buy and treat

thankXXX

[fozzie]

Jenny,

I would not normally use a chemical spray, but you may have to, so use a systemic fungicide for the fungal infection (either a general rose fungicide or specific to black spot)and as was said earlier cut out the diseased wood as best you can without being too severe and causing more damage. Use the spray on the leaves and stems. The other things I would do are 1. use a Sulphur based product either as a spray to the plant or water the root system, be a bit careful because it can affect the acidity of the soil. The other thing I would certainly do is use a sequesterine treatment to the roots. Its akin to having the odd bottle of stout or guinness when preggers! But in the case of your rose only one max two tratments a year.

Fxx

[JennyWrenn]

Update July 2007

My poor Rose survived and was better this year than ever before. I sprayed it with a Rose Fungal spray and fed it - it climbed even higher and had more flowers than normal - it hasnt had Black Spot which all my other roses in the back garden have had - I think the cure for this is to cut all the stalks off ie hard prune

This means that my Albertine now is just bare stems - have I done the right thing

[fozzie]

Hi Jenny just found your update.

Glad your poorly rose is poorly no more! My Albertine is covered with black spot, seems to be a good year for fungal attacks. Pruning is a good way of reducing black spot as it will survive in the stem rather than the leaves. I take it you have not taken Albertine down to ground level? You can normally see where the black spot is on the stems and its those you remove. You should be seeing some new growth soon. Even if you reduce the main stems it will force new to be produced. Depending on how you have pruned her, she may look a bit strange or lop-sided for a year or so. If you have not done so I would give her a feed, just to help her overcome the shock of a summer prune, you will not have done her any harm, natural pruning like fires or animals will take place at any time and the plants recover.

Fxx

[JennyWrenn]

Oh thank u fozzie I didnt check the stems I will do that 2moro and feed her - she looks very bare without any clothes - all my other roses had black spot apart from the "poorly rose" odd eh? Oh and of course Dear Old Arthur Bell - he never gets poorly ;D