Most likely you have black spot. You can treat it with 1tsp baking soda, 1tsp horticulture oil, 1tsp insecticidal soap in 1 gallon of water. spray leaves top and bottom once a week. In the future make sure your roses are mulched well and water early in the morning and only at the base. Roses hate to get wet. Watering in the morning will give the leaves a chance to dry if they get wet. If your rose is already established (been there for a season) then you only need to water once a week at most.
2007-06-24 07:43:36
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answer #1
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answered by Sptfyr 7
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Sounds like black spot, i think someone else already mentioned that. If you don't want to play chemist,ou can just to Home Depot and buy a product called Ortho RosePride and mix it to what the package indicates. Furthermore, it wouldn't hurt to fertilize your roses with Miracle Gro Rose food every 7-14 days. Good Luck!
2007-06-24 15:11:46
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answer #2
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answered by Anonymous
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The best time to water rose bushes is in the morning so the sun has time to evaporate the water or black spot will develop and the leaves will turn yellow and fall off.
2007-06-24 17:00:56
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answer #3
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answered by RICH T 2
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Horse manure round the base of the Rose should do it.
2007-06-24 14:49:37
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answer #4
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answered by bob_e_dawg 2
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It could be black spot. Or you plants are malnourished, give them a little bit of fertilize
2007-06-24 14:40:02
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answer #5
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answered by sharp_shooter 4
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Give them some miracle grow and water often.
2007-06-24 14:43:48
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answer #6
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answered by inoty 2
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