@Tack hope your roses are at their best for your family wedding. There are thundershowers forecast for Monday. Hope they materialize as with the looming hosepipe ban, we're unable to water the plants when they need it the most. The grey water which I collect is only enough for a few pots.
Oxford. The City of Dreaming Spires.
And then my heart with pleasure fills,
And dances with the daffodils (roses). Taking a bit of liberty with Wordsworth
Oh dear @murasaki. I really don’t know what the problem is but two things occur to me..
Firstly, plants under stress are much more susceptible to being attacked by pests and diseases.
Secondly, why are they under stress? Is it just drought/very hot weather or is there something wrong with your soil and cultivation practices? For example, is your soil compacted with poor drainage? If so the roses may be lacking in oxygen and the more you water the more the roots are drowning. Or if you have free draining soil are you simply not watering deeply or frequently enough? Is your soil poor in nutrients so the roses are basically starving? Or is the PH of the soil extremely acidic or extremely alkaline so nutrients are being locked out? Has there been a history of soil contamination or use of pesticides in your area?
I think the first thing I would do is dig up one rose and examine the roots and the soil it is growing in. That might give you some clues. Sorry, lots and lots of questions but no answers..
Mountainous Northern Catalunya, Spain. Hot summers, cold winters.
Second flowering of 'Golden Anniversary. Many buds still to come. Colour is much paler than the first flush but the scent is still lovely. I have been very happy with this rose. It has not been troubled with aphids or black spot to any degree. Such beautiful photos from everyone and so many different roses!Â
@Nollie true about the scent being different at different times.. Certain roses are at their best before midday.. some need the midday sun I feel.. the heat wave however makes them lose their scent pretty soon..
@Marlorena even I feel the same about Domaine d C.. its petals are so tightly packed.. will know for sure soon.. if the remaining buds does not open soon...
@Tack you can make a pathway of roses for the newly weds...
@murasaki my roses had yellow leaves when their watering schedule was missed in the hot weather.. can you rub your hand under the leaves and see if there is a dusty feel to it, then it could be mites.. not sure.. as others mentioned, it looks like a combo of things..Â
@murasaki so sorry for what’s happening to your roses, really heartbreaking.
I think you have a bad case of downy mildew (Peronospora Sparsa) and that’s not a good news, but I think you can manage it with constant anti-fungal application.
Take  a look at this article, I hope it will help
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Firstly, plants under stress are much more susceptible to being attacked by pests and diseases.
Secondly, why are they under stress? Is it just drought/very hot weather or is there something wrong with your soil and cultivation practices? For example, is your soil compacted with poor drainage? If so the roses may be lacking in oxygen and the more you water the more the roots are drowning. Or if you have free draining soil are you simply not watering deeply or frequently enough? Is your soil poor in nutrients so the roses are basically starving? Or is the PH of the soil extremely acidic or extremely alkaline so nutrients are being locked out? Has there been a history of soil contamination or use of pesticides in your area?
I think the first thing I would do is dig up one rose and examine the roots and the soil it is growing in. That might give you some clues. Sorry, lots and lots of questions but no answers..
Such beautiful photos from everyone and so many different roses!Â
Sidonie
Jacques Cartier
Rose de Rescht
Boule de Neige
@Marlorena even I feel the same about Domaine d C.. its petals are so tightly packed.. will know for sure soon.. if the remaining buds does not open soon...
@Tack you can make a pathway of roses for the newly weds...
@murasaki my roses had yellow leaves when their watering schedule was missed in the hot weather.. can you rub your hand under the leaves and see if there is a dusty feel to it, then it could be mites.. not sure.. as others mentioned, it looks like a combo of things..Â
My Boule de Neige is also loving the heat.Â
I think you have a bad case of downy mildew (Peronospora Sparsa) and that’s not a good news, but I think you can manage it with constant anti-fungal application.
Take  a look at this article, I hope it will help
https://apsjournals.apsnet.org/doi/10.1094/PDIS-12-17-1968-FE