I have several fuschias in hanging pots around the outside of my house in New Jersey, USA. The summer has been moderately warm and humid with ample rain. My plants looked great with bountiful blooms until about a week ago. In a pot with three plants, a single plant started wilting as if dry. I removed it, repotted the remaining two in separate pots. Now both of them are dying. I have inspected for pests, but found none. Any thoughts?