Here are some pictures to help clarify:

http://i483.photobucket.com/albums/rr200/bsloan05/SUC50017.jpg

http://i483.photobucket.com/albums/rr200/bsloan05/SUC50018.jpg

http://i483.photobucket.com/albums/rr200/bsloan05/SUC50016.jpg

just copy and paste into browser

Here is a link that might be useful: {{gwi:319802}}

Wish I could help. Hopefully someone who has seen this type of damage will pipe up.

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I don't know what it is but it looks awfully similar to what is affecting my pear tree this year.

Gilli

?? Really really bad case of spider mites ?? See any tiny webs anywhere? Or leaf hoppers?

Control for spider mites is easy and non-leathal--wash the plants off every day for several days. Spider mites hate wet foliage.

Here is a link that might be useful: {{gwi:319803}}

Only pest I've found is aphids and I've been knocking them off like a madwoman!

I just had a thought...

I've been using a dishsoap/water mixture remedy I found online to kill aphids...I wonder if that's causing it!?

Then again, the blotches are moving down the canes...ugh.

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Brown blotches on leaves - possibly burns from water?

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Blotches on canes are making their way downwards

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Burnt new foliage

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Purple-Brown blotches

P.S I made a second account so I could go ahead and post these pictures now - it wouldn't let me post 2x in a row.

This appeared today on the same type of rose bush as I was talking about earlier. This one is located on the other side of the mailbox:

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White dots appeared today - wipe off easily

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White powder?

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Lots of dead gnats on the white substance - weird

Oh yeah, some of the roses failed to open and had white "fuzz" on the green part of the buds (not sure what it's called). I just picked off those buds...

The first few pictures with the brown blotches I would say is from a chemical spray or the spray you are using. The last two pictures it looks like some birds pooped on your rose leaves,...seriously.

That white fuzz on the buds is powderly mildew. It's getting bad in our area because of the warm days and cool nights

The last pictures are of bird poop.

LOL! I don't know if it's bird poop or not! The way is was perfectly circular dots all over was weird :\

I used a 2 tsp per 1 quart baking soda/water mixture with a few drops of dish soap. Would that burn it? I did it in the morning, too.

How do I get rid of powdery mildew?

I think perhaps you should look into Downy Mildew. Try it on Google. It is very difficult to eradicate and wreaks havoc on your roses. It is usually purple blotches and starts at the top of the plant and moves down. Brought on by warm days and cool nights. I had it in my garden once in SE Mich and had a heck of a time getting rid of it.
Bill