My rose plant has a white (looks like mold almost) on it's leaves and flowers. It is spreading around the plant. It was just on one section of leaves, now it's on almost the whole plant. Flowers and all. Any suggestions on what it is and how to treat it?
Why does my rose plant have a white film substance on it's leaves and flowers?
Spt is correct, Powdery Mildew, brilliant as usual S! Spectracide 3 in 1 available at Lowz, HomeyD, Wallyworld
Do Not rinse it off. Powdery mildew is caused by too much humidity and not enough air flow.
Reply:wash the plants,yes even ones around the one in question, with warmer dish soap water then hose off to rinse. Use a smooshie type sponge. big yellow one. That will take care of any white mold,aphids or spider webs.
Reply:It has a fungus on it, and they are suceptible to mold and fungus. You can get an anti-fungal spray at your local home and garden store to treat it. It's been a while since I have roses and I forget the name of the product but someone there should be able to advise you on the best product
Reply:It's called powdery mildew. I don't know what zone you are in or even where you are, but if you are heading into a cold winter then don't worry about it now. However, if you are in a warm climate then you can get a fungicide for roses. It has also been shown that a dilution of 1part milk to 9 parts water sprayed on the plant weekly will kill powdery mildew.
Good Luck
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