I am sorry for this delayed reply to your gardening question. We are transitioning to a new Q&A system and your question was unfortunately lost in the transition. I have discovered it now and hope this reply is not too late to be of help.
That viburnum should be happy in the location where you planted it. Pruning will remove the new growth and thus prevent it from aging so it can produce blooms. This does not explain why the unpruned parts have not bloomed. I can't figure out why that is. Good light, adequate soil moisture and time should bring blooms. I'm sorry that we can't provide any other help on this one, but your plant is not playing by the rules! I suggest you try giving it a little more sun and take care not to over fertilize it.
Thanks for the question. Please stop in again soon!
Q&A Library Searching Tips