Black spots on roses- cut all leaves? :(
vitoro
13 years ago
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buford
13 years agopirula
13 years agoRelated Discussions
Black Spots on my rose bush leaves
Comments (4)K2laser, I live in South Carolina and we have the hot humid summers, not as long as you, but we sure get hot during the summer and the humidity is so thick you can hardly breathe. There are some hybrid teas that are very black spot resistant, I would research that onine and ask in this forum for some names of some of them. You really can't ever get rid of black spot on a rose. You can spray all kinds of expensive sprays dilligently on the rose bush and canes, constantly keep the rose bush real clean, don't let the infected leaves blow into other roses, and they will always have it. I bought for the first time this spring a knock out rose, double red. It is the only rose in my garden that doesn't have black spot. It is absolutley gorgeous! Clean foliage, and grows fast. When I get tired of all the nonsense for my hybrid tea rose trees and black spot, I will buy another knock out. All you ahve to do is water them, don't even dead head them. Low maintance, it is a beautiful thing....See MoreThe roses have grown new leaves since the attack of black spot. H
Comments (3)Google Scholar will tell one about scientific tests with milk and mildew. I will just post one review (2007) as the links to the individual scientific papers are often long and cause problems with reading on this forum. Here is a link that might be useful: one literature review 2007...See MoreBlack spots on leaves on all flowering plants - Please help!
Comments (0)All of our flowering plants seem to be getting black spots. It doesn't seem to matter the variety, sun exposure, moisture, etc. It's our peonies, tree peonies, lilacs, azaleas, and more. Some are in the front of our house, some along the side and some in the back. Some get more sunlight than others and some are on our sprinkler system (with water restriction it's only 15 minutes every other day) and some have no additional water. Does anyone know what's going on and how to fix it?...See MoreIs this black spot? Spreading to all my roses
Comments (5)I did not see any organic fungicides on the Witherspoon website. What does the label say is in your fungicide? I had excellent experience using ordinary corn meal under my roses. I had neglected the roses for other projects. By the time I got to this they had both black spot and powdery mildew as well as aphids. I cut off all the leaves with black spot, scattered a heaping handful of corn meal under each plant, and then dropped some compost. Then every month I repeated with only the corn meal. The second year I repeated the compost and monthly apps of corn meal. The corn meal is both an anti fungus agent and also an organic fertilizer. Corn meal works by attracting a predatory fungus that attacks the disease fungus. And I don't know if your experience will be like mine, but my aphids disappeared immediately with the corn meal and compost. That first app was in 2002 and for the past 15 years they have had no disease or aphids. I know how ridiculous this sounds, but I swear I have not used any other products on them....See Morebuford
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13 years agojim1961 / Central Pennsylvania / Zone 6
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13 years agojim1961 / Central Pennsylvania / Zone 6
13 years ago
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