advice sought re disease on my fuchsias

HELP, UNKNOWN BLIGHT ON MY BELOVED FUCHSIAS! can you advise please?
many of my fuchsias have developed a leaf disease which looks like black-spot on roses. Leaves turn yellow, with black spots thereon. I've never had this happen to my fuchsias before, and intrestingly, some varieties of fuchsia remain unaffected. Any ideas re nature and effective treatment?
Andrew

 

Sorry Andrew can't help with this one. Usually that kind of discolouration on the leaves mean the plant is stressed for some reason though it could be a fungus infection. Fuchsia if stressed will develop very dark purple leaf markings and then they will yellow and drop. Question would be what is causing them stress - cold no, not at this time of year, waterlogging or too dry possible, whitefly,or other pest like vine weevil. Are these container grown or garden fuchsias.