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Roses

Roses with black spot and deformed leaves

Hello, I have noticed that the leaves on one of the roses have black spots, are turning yellow and falling off, and on another rose the leaves are growing deformed. I treated them about a month ago with an aphid spray. The roses were planted last year and had no problems last year, just an infestation with aphids. Is there any way I can save them?
Thank you in advance for your advice!

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Hello. The symptoms in the first photo are specific to the black spot of roses. In the case of this disease, in addition to treatments, hygiene measures are very important ( the removal of affected parts and their destruction by burning). In this situation, after removing the affected leaves, it is advisable to treat the plants with a fungicide such as Score 250 EC, 2 ml, in a dose of 2 ml/10 L water, applied by foliar spraying, and after 7-10 days, you can alternate with a fungicide such as Zoxis 250 SC, 10 ml, in a dose of 10 ml/10 L water, applied by spraying.
Also, to stimulate the healthy growth of the plants, it is recommended to use a fertilizer specially formulated for the nutritional requirements of roses: Fertilizer for Roses Rosenzauber, 350 ml, Roses, 1 kg or Roses NT, 250 ml.
In the case of roses with deformed leaves, please attach more photos of them, both as a whole and up close with the symptoms observed and give us more details: when exactly did the symptoms start? Was the rose exposed to low temperatures or temperature fluctuations? How often do you water it? Are pests present (check the underside of the leaves carefully) or symptoms of a disease?

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