I purchased a pink dogwood tree in the spring. It has done great to date, but now the leaves appear droopy, like a plant that needs water. The nursery told us not to water, that the tree does not like a lot of water. We have had a very, very wet year, so the tree has had a lot a water. My question, is the drooping of the leaves this time of year normal? Should I water, since the past 2 weeks, we have not had any rain?