I see only a few specks on the leaves.. but it looks like it centers on the new buds... Have no idea but would Rust do that.... when I have had rust it centered on the leaves not the buds. Hmmm strange... Where's buglady???


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Hey Bill, Not much of a Rose type guy, but my man at the U of M had this to say,(M.G's have FAST access to info)I have NO IDEA if this is your problem but he said it is prevelant in the Pacific coast region! Rose rust, Phragmidium species; Orange postules develop on leaves and succulent stems then turn black in late summer. Favored by cool humid weather. (Overwinters on diseased leaves and infected stems.) Remove and destroy all leaves and infected stems during the dormant season.And of course (and the reson the U and I don't see eye to eye,) the "CHEMICAL SOLUTION": Dormant spray of Bordeaux (8-8-100), lime sulfur or tribasic copper sulfate. Growing season: Ferbam or triforine. (Propiconazole for field-grown roses only.) If I studied it I could come up with a "safer" solution, however the bordeaux mix is O.K. by me

Yep! You hit the nail on the head Karen! Thank you!
Thank you for the confirmation and treatment recommendations Phil! (You don't get a kiss though...)

Hi Bill

I am not certain about rose rust, but with most other rust outbreaks, you can push the disease away with a good heavy dose of a high nitrogen based fertilizer. I never even bother using a fungicide when rusts appear on lawns. I just up the fert rate. Also keep any night time watering down to a minimum, and try to achieve as much air circulation around the plant as possible.

I have not been around much latley, I started a new job, and well, lets put it like this, I was on overtime when my alarm clock went off yesterday morning. I am very much looking foreward to this weekend to do some catching up.

Take care

Mike

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Mike Maier
aka
The Plant Doc