You are very welccome!* Not sure what can be determined from a leaf if it's not discolored or it doesn't have some type of spots. Maybe you are thinking they will be able to tell you which species of dogwood you have.* When it did bloom, did it bloom before the leaves appeared or with the leaves?* Any idea how old the tree might be?
*Did you check to see that it's not planted too deep?* If it looks like a telephone pole where it meets the ground and you can't see a rootflare at the base, I suspect it's been planted too deep or had too much mulch piled around the base.* This is what it would look like planted too deep.

Here's what the rootflare looks like.

Newt
When weeding, the best way to make sure you are removing a weed and not a valuable plant is to pull on it. If it comes out of the ground easily, it is a valuable plant.