It would help us a lot if you edit your profile and tell us where you are located. I'm in zone 8a, South Carolina. I think I have the same or similar viburnum, which I believe is Double file Viburnum. Does it look like this one If so, the leaves do droop naturally. Your plant looks fine to me. As with any newly planted shrub, tree, etc., it need to be well watered regularly for the 1st year or until the roots are established in the new location. You mentioned lack of rain, in which case, you do need to make sure that it gets the suggested 1in. of water weekly, especially if you live in a warm or windy zone, as the plant will dry out quicker that if it were in a cooler climate or higher humidity levels. I think that if all looks well as the root zone, you should just leave it alone and let it settle in its new home.
to ATP and hoping that you have a good gardening season.
Mine has always looked glorious, until this year. We have had frequent and unexpected late frosts this year, and I think that affected the buds. Most of which blasted. The tree really looks sad. Your problem may not be due to your cultivation, but the plant could have been affected after leaving the greenhouse where it was grown. As I said, give it some time to settle in. It's hard for any plant to bloom and make roots at the same time. It takes a lot of energy, hence the need for compost or fertilizer and regular water. Always water well before fertilizing, otherwise, you risk damaging the roots, which will set the plant back further.
