ours are native have in the past purchased dogwoods numerous times and they have all died so i gave up, i leave up to the birds and mother nature.
they are the only plant i have seen at the nursery that does not have a warranty if it dies....
Perhaps here is where my patience and cheapness pays off. I am willing to buy the tiniest of plants with the expectation that they will survive and grow with care. The small ones are usually less expensive, besides. I have a dogwood that was planted when it was barely 18 inches tall. It has been here for over ten years and will be blooming in a couple of weeks (I hope). I believe it is a Kousa called "Red Chief", although, I find the flowers more pink than red.
I, too, have killed a couple of dogwoods. Not from my mis-care, but from a virus that took out my earliest efforts. It is hard to watch a baby (tree) die knowing there's nothing you can do.
Nyboy, do you have any mock orange? If you like blooming shrubs, this is an ideal one for flowering. Smells like citrus and looks like the morning after a snowstorm, so many blooms you can hardly see the foliage. Flowers a bit later -- like early summer rather than early spring.