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hmm, seems plausible: http://www.rose.org/rose-care-articles/cercospora-leafspot-in-roses/
Cercospora is a nuisance, but not as bad as BS, in my experience. Hopefully your rose here will pull through and shrug off the annoyance as it matures.
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Interesting. I hadn't heard of that one before. Now I'll be checking my other roses for this.
The grey centres on some of the spots match certainly that description. I note that they rate Rosa wichuraiana as "highly resistant or immune". Since Baby Alberic is a wichuraiana hybrid, it may retain enough ooomph to get through this.
I don't mind it not looking perfect all the time, as long as it looks near enough to a decent shrub 99% of the time.
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R. wichurana and its close descendents have a unique trait against spot disease (but not mildews), where the leaf surface will try to blockage the pathogens. Rosa wichurana has the highest known capability in roses to do this. Its an interesting trait. So, for example, a black spot dot of infection on 'Peace' could be a centimeter wide, but the identical infection on a R. wich hybrid may be much smaller and more confined.
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Sounds very handy for this part of the world. The subtropics tend to be Fungus Central.
If the little monster gets through the next few weeks without looking like it's caught bubonic plague, it should be ok for anything this climate will throw at it.
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Yes, similar here. I live at the edge of temperate rain forest. Similar, but cooler.
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