I moved a hosta from front yard last fall and planted what was to be a shade garden. This year the city cut down a mulberry tree and trimmed a tree that shaded this area. Now this area is getting full sun. Now, on one hosta, the bottom leaves are withering off. Does this mean too much sun or not enough water? When hostas are in full sun, how often to water? I'm not sure the name of the hosta because I did not plant it- it came with house. It looks like minuteman but I'm not sure. Is it too late to move to less sun?