I have a unique hydrangea that I planted on the west side of my garage about three years ago. Since there is a 6' fence about 12' from the garage and the neighbor's house another 10' from there, it only gets a few hours of sun a day. I think it needs quite a bit more to live up to its potential and I'm thinking about moving it. The backyard faces almost directly south and I was thinking it would fit along the fence on the west side of the yard. It would get full sun until about 3:00 in the afternoon. Is this too much sun for a mophead?