Whats wrong with my rose bush?

Jcsherman(10 SoCal)April 27, 2014

Can anyone tell me what is happening to my rose bush. I already lost rose bush this year. It never came back from its January pruning. Then my St. Patrick lost almost all it leaves but it might be making a come back and now my Chrysler Imperial looks distorted. I had roses for 8 years and have never had problems like this. I had a little rust issue and have been spraying for that but this looks different. Thanks for any help.

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kentucky_rose zone 6

Downy mildew?

    Bookmark   April 27, 2014 at 7:09PM
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hoovb zone 9 sunset 23

Looks sunburnt to me. We had that heat wave right when everything had pushed out a lot of tender new foliage--the plants couldn't take it.

I think your plant will be okay there, but I'd rig up some temporary shade to get it through our next heat wave due Tues-Friday.

    Bookmark   April 27, 2014 at 8:52PM
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campv

Is the spray too strong? Did you spray mid day in the sun?

    Bookmark   April 28, 2014 at 12:03PM
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seil zone 6b MI

I think it does look heat stressed. I'd take off the damaged parts and give it some kind of shade during the hottest part of the day. Even just a lawn chair over it to shade it will help.

    Bookmark   April 28, 2014 at 6:03PM
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