I have a tea viburnum that's in its third growing season. It receives 9 hours a day of direct sun. The bottom older growth is healthy and laden with berries however the new growth top shoots the leaves curl and point downward. There is no evidence of disease. I'm afraid it can't handle all that sun. Should I transplant to where it's at least shaded from late day sun? I water it every other day when it's really hot like 90's otherwise I water weekly at the base in the morning for close to five minutes sometimes. It's mulched.