Rose Powdery Mildew- The Pilgrim

Wondered if I could pick someone's brains? Complete beginner with roses, I got my first two a few months back. Jubilee celebration is doing well, but the pilgrim not so. Ok it was a really healthy plant, lots of vigorous growth, plenty of buds. Now the buds are finally starting to open and they seem to be part opening, some a little deformed, maybe one or two fully formed roses but still only about a 3rd of the size of those that were displayed. Some of the leaves have the powdery white coating on the leaves, especially those at lower levels. I noticed some of the new leaf shoots are slightly curled, but it still seems to be producing plenty of buds and these are not White. I would try and get a picture but I only have my phone at the moment and I can't upload then. I'm not too sure what to do, I'd read to cut it all off but it just seems very severe considering it's full of buds and only parts are infected. Any help would be appreciated? It's such a beautiful Rose and would be a shame to loose it :( especially for £16.95 lol!!

Thanks

 

from site:Rimedi casalinghi per l’oidio | Un pugno di terra e un seme

PS If something is very unclear to you I can go back to the original version and translate it better
Home remedies for powdery mildew

21/08/2009

Oidium or powdery mildew: the scourge of the garden, at least in my garden and in particular of my zucchini.
Powdery mildew is a fungus that covers the plants with a patina white that sometimes the whole plant withers but more often does take on a sickly and certainly not flourish.
Powdery mildew in the early stages of courgette

Powdery mildew can attack almost anything that we plant in the garden and its development is favored by conditions wet , moderate temperatures (between 10 ° and 30 °) and poor ventilation . In practice grows preferably in spring and autumn, especially if wet.
Powdery mildew of tomato leaf

We can do some things to prevent mildew development:

• plant spacing between them so as to allow air to circulate
• so that in plants such as tomato leaves from stacking the air without letting go. Support it with stakes or canes
• do not water at night to avoid stagnation of water on the leaves.

If you notice the first signs of the the whitish coating is not necessary to immediately begin a chemical war. Powdery mildew can be treated with ingredients that are readily available and do not pose a danger to health.
Powdery mildew on pea plant

Of course that destroys the powdery mildew also destroys beneficial fungi that live on the plant, creating imbalances that favor the occurrence of other diseases. The ideal is to prevent and treat only if clearly needed. Or have a method to restore the natural equilibrium. We'll talk soon.
Before striking out the prepared some general tips:

• start the treatments at the first signs
• Before any treatment affected dall'oidio spray the leaves with a jet of ' water strong enough to remove the fungus as possible
• If leaves are affected particularly clear them to prevent the spread of the fungus, because they can not recover
• When you spray the careful preparation to cover all parts of the plant, including stems and the underside of the leaves
• Sprays prepared the morning before the sun is too high
• If need is 1 or two times a week if the weather is dry, more often if it is wet.

And finally, here are some home-prepared. Try and find the most effective for you.
Vinegar . Put 1 tablespoon of vinegar in 1 liter of water.
Garlic . Add 4 cloves of minced garlic in a quart of water and let soak overnight. Tured nose and filters before spraying.
Bicarbonate . Put a teaspoon of baking soda in two quarts of water.
Chives . Cut into pieces small bunch fresh chives, put it in a container and cover with boiling water. Let stand until cool and then filter.
Horsetail . Blend finely a bunch of horse tail, cover with water and let it sit for 24 hours. Filter and dilute 1 part of this liquid with 5 parts water.
Hydrogen peroxide . Spray hydrogen peroxide on drugs that are affected plants. Do not spray on seedlings or newly transplanted. Before using hydrogen peroxide do a test on a small portion of the plant and wait 24 hours to see if there are negative effects.

Milk . Mix 1 part milk and 2 water. The first signs of powdery mildew sprays every 3-4 days. The milk changes the pH of the surface of the leaves and prevents the fungus from attaching.

 

I think if I were you CG I would opt for one of the sprays from the garden center this time. You don't want to come home to a wrecked rose or have had it spread. Did you plant it in the ground or a pot??

 

Great info Mira. I knew about the milk and bicarb but not the others. I will be trying those ideas if I need to. Much better for the cats and wildlife.

 

Thanks for the help both of you I'm going to a garden centre shortly as need to plant some bits up before we go off to the highlands tomo.

 

Oh sorry I forgot to say it's in a large pot. Only temporary though, until we get our own place sorted.... Then it'll be in the garden. So are there sprays specially for the mildew?

Are there many varieties immune to mildew?

 

Shift the pot away from anything else to keep it from spreading. I also spray the top of the pot since that's where it will hang out.

 

The varieties:
Cornelia, Buff Beauty
see link
Cornelia, rose - Search-results Search


And Ballerina
see link
Ballerina Rose
are quite resistant to mildew. But roses kept in vases are generally more prone to diseases.

 

Ultrarose is pretty good at controlling disease - if you can stomach the fact that they've now added fake rose fragrance to the spray. It will only ever control, not cure. I'm afraid most roses can be martyrs to disease, even the most resistant. However, although mildew and black spot can look a bit unsightly, in my experience they rarely kill the plant.

The accepted wisdom is that powdery mildew is always worse in areas with poor air circulation - congested borders, for example. Dryness also apparently makes things worse (the exact opposite of what I would have thought; I think it's the name which confuses me. The kind of mildew you get on your shower curtains is definitely a problem of damp conditions!). A well fed plant will always be healthier than one growing in starved soil; plants in containers need a lot of extra attention in this respect.

I don't bother removing affected shoots unless they're so bad that they're completely hopeless. Generally, flowers will still survive perfectly well as long as you give the plant a good spray. When you're clearing up in the autumn it's best to be as tidy as possible and to avoid leaving too much diseased plant material - fallen leaves, for example - lying around. That way, you'll have a better chance of clean bushes in the spring.

 

Thanks everyone for your advice! Well went to a small garden centre down the road. All they had was rose clear. It did say it treated for several things incline powdery mildew. I see what you mean about that awful fragrance they've added.... Definitely not the kind of Rose smell in fond of, lol.... Reminds me of doilies, frilly things and cheap Rose smelling soap as a raffle prize!! Anyway I treated the Rose and the others my oh's mum has just to be safe, she has darcy bussell. I did take some photos but will have to put them on next week as I'm off on holiday.

I only planted it up about 4 weeks ago so I can only think it was present when I bought it. I'll have to be a little more observant next time!! It's weird as most of the flowers aren't forming properly before they open up . They almost look like miniature roses maybe 2inches in diameter the largest about 3inches and they should be maybe 5-6 inches. There are tons of buds on it. Would they be better if I cut some of them off? Would the Rose push it's energy into making bigger and fuller blooms? The crown is fairly crowded with lots of growth and I don't think it's very open to circulate air freely.

Catztail I will try and move it but the damn thing is pretty heavy!! Plus there is not corner without a pot already at the moment he he. Bought a big bag of cockle shells today to top all of the pots with, on your advice. Will have to watch out for then toppling over though!!

 

Just leave it until you get back and see what its like. Leave any real pruning till next spring. It may just be a bit stressed from potting.

 

Several plants in my front garden get powdery mildew, notably (only) 2 roses and monardas.

The cause is soil being drier than the air, here, it used to be congestion too but i thinned out the planting and it's helped massively.

The whole garden is dry though and when i've not been watering diligently these plants get the powdery mildew forming.

I use any of the anti fungal products and it soon clears the problem but strict watering regimes is the best answer !


This problem affects shrubs too, i have an Escallonia which shows the problem not in mildew but black spot on the leaves, the type you see on roses, and by spraying with the anti fungal product in spring and then at intervals through the summer you can reduce the problem - again though, if the soil's always drier than the air you're back in trouble.

 

Thanks for the help guys!! gave it a good spraying, and when I returned from my hol it the leaves were looking much better, I guess it wasn't so bad after all!! Even better is that most of the blooms are opening at near enough full size now and boy there are plenty of them, strange how the first ones were small and/or deformed almost. Will try and get a pic to follow, but thanks again everyone for all of your usefull tips :D

 

Here's a few photo's for you all. The first one is probably the worst area, I have clipped it away since, and it was taken a few weeks back. The others are the rose as it is now....and looking healthier.




I clipped this bit away.






The offending rose The pilgrim





The Pilgrim





This one grow's in the OH's garden, it's been there a few years. Pretty diseased to be honest but the flowers are not affected it would seem. No idea what it is but it has a VERY strong floral scent.....lovely colours though





Darcy Bussell. Another in a pot, and doing very well it would seem

Hope you enjoy looking at them as much as I do as often as I can