Does clematis (I have the Niobe variety) like full sun (as in sun most day) or prefers a part shade location? I got this one a few months back but it only went downhill. Lots of brown leaves (as if burned). Is it a fungus that I need to treat with fungicide or find a shadier spot for it? I was told when I got it that I don’t need to transplant it yet and it likes full sun. It gets enough water. Any insights and advice are greatly appreciated. Also it will be in a pot. Thank you