A number of my fuschia plants have problems with patches on their leaves. Hope that the photo here shows the problem better than I can explain. Would anyon3 know the reason for this?
I've got this on one of mine, an old hardy one, been in the ground for years. It looks like herbicide damage, with areas scorched, but nothing around it has the problem so it can't be herbicide.
Fuschias are not too happy in very hot conditions. I have had plants in the past with the same scorched leaf appearance. Keep them watered well especially when we have hot weather in summer.