We bought a fuschia double otto in late April, planted it under some magnolias with shaded light, lots of air, good drainage, no direct sun. Not too cool, not too hot. At first, it bloomed really well. Lovely. Dainty. Over the past month, it has been slowly losing all its leaves. Many turn yellow with marks all over leaves, as per the picture. Now it is a mere skeleton of what it once was. The Garden Shop where I bought it doesn't know what is wrong with it. In a last ditch attempt, I took it out of the ground two days ago and put it in a pot with new soil. Any suggestions? Is it a virus, a pest? I did spray near it with a soap and water concoction, then Safers (for aphids), and there is a rose close by that got a hit of rose fertilizer (and Safers). Thanks, in advance, for your thoughts.