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Hi everyone ,
I had a quince for nearly a year now and i have so far repotted it ( as soon as i got it) and just cut off an air layer in september wich was succesfull .
I recently noticed these spots on the leaves , at first it was on just a couple of leaves and i thought it they were just damaged by the weather or something but they started spreading and now im worried. But the plant is still looking healthy apart from this ,its still putting out some new shoot in this time of the year .
Here is a photo of the leaves


Anyone know what it is ?
Thanks
Nico