Posted by: Kathleen
Posted: May 16, 2015
It is quite difficult to make out from the image, some close ups of those lesions and spots would be great. I suspect that this is rust, caused by a fungus and the raised areas are the rust pustules where the spores are produced. If the infection is mild, you could try pruning off the affected leaves. If many/most leaves are infected then it may be best to get rid of the plant and start again. Please do post some more images (whole plant and close ups of those lesions.