Spots on rose bush leaves

PattiL(6b)June 3, 2012

We inherited a pretty white floribunda (I think) rose in a large pot. After all the new leaves popped out they all got these small brown spots on the top side of the leaves. I sprayed the plant with an organic plant bug spray and a couple days later all the leaves had fallen off. Now the plant has all new leaves and they are beginning to get the same brown spots. Does anyone have any idea what they are and how to get rid of them? Thanks!

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kentucky_rose zone 6

Yesterday I began noticing a similar appearance of sort of purplish spots on my rose bush leaves. I sprayed a few days ago with a new product that has spinosad in it. Could this be the cause?

    Bookmark   June 3, 2012 at 4:12PM
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PattiL(6b)

In my case I had not sprayed anything in the yard prior to seeing the spots on the leaves.

    Bookmark   June 3, 2012 at 7:46PM
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cecily(7 VA)

Hi Patti! Welcome to the Rose Forum. Your rose doesn't have bugs, its a fungus disease. Rose foliage is susceptible to many assorted fungal diseases and most roses need to be sprayed with a fungicide in our climate to protect the foliage. Start spraying in early spring and spray (just a quick mist) with fungicide every two weeks during the growing season.

    Bookmark   June 4, 2012 at 8:12AM
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catsrose(VA 6)

Looks like anthracnose, a fungal disease similar to blackspot. Try a fungicide or just leave them be. It will clear up when the whether gets drier. Please be careful what you spray. Many sprays are highly toxic, can kill the good with the bad, and remain [toxic] in the soil and water.

    Bookmark   June 4, 2012 at 8:13AM
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PattiL(6b)

Thank you so much for your help! I will try a fungicide. The bug spray I used was an organic one so hopefully it didn't hurt anything that's beneficial. You all are great! : )

    Bookmark   June 4, 2012 at 8:31AM
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mamatimms

Is there a safe spray for use on black spot? my climbing roses are in my herb garden. This is the second or third season I've lost most of the foliage on the plants, and after reading posts realize I need to jump on this earlier, but for now any suggestions?

    Bookmark   June 4, 2012 at 8:39AM
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Krista_5NY

In my no-spray garden I find it works well to let the roses fend for themselves regarding blackspot.

They get black spot and drop leaves, however they grow well and bloom well.

I think that organic fertilizers build the soil to create an environment where the roses do well, even with blackspot present in the garden.

    Bookmark   June 4, 2012 at 10:40AM
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cecily(7 VA)

Mama Timms, I personally would NOT spray a rose in an herb garden. There are fungicides labelled as safe for agricultural use (think apple trees and veggies) but I'd be more comfortable yanking out the rose and replacing it with a disease resistant variety. Choosing a climber depends on where you live.

    Bookmark   June 4, 2012 at 11:35AM
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