Hello, I live on the outskirts of Moscow and this year all leaves on my roses started to turn slowly black until they die and fall off/ Please help identify what might be wrong and how to cure my babies? Thank u very much in advance Alexei
black spot. very common fungus on rose - especially if it's been very rainy and the leaves don't have time to dry off. i don't use many chemicals...i DO use spray to treat the fungus on the roses, though. get something that is specifically for black spot on roses.
Not 100% sure going from photos shown above. If it is blackspot other leaves will look like this. http://images.google.com/images?q=b...ent=firefox-a&um=1&ie=UTF-8&sa=N&hl=en&tab=wi
Can be black Spot then again it can be a spider mites or lack of something in the soil. Did you see mini webs? (just remove them) . Take a leaf and tap it on a white piece of paper if you see little critters running for dear life, there you have it, spider mites black or red. Never spray roses with anything during sunshine hours. Pull/ cut all leaves and discard immediately. I do not use chemical for any rose under any condition. My friends do and mine are healthier looking. You do not want to kill the predators.And Chemicals just stress the plant . I water well early and do not mist the leaves. Pest arrive in many cases when the plant is stressed, keep it happy which is the first when focused on preventative care. Kale:)
