The annual Washington D.C. Japanese cherry blossom festival is a good
example. An equally spectacular display could be had with American
native trees such as dogwoods and redbuds.

Not a good example. The cherry trees were a gift from Japan. We could hardly
have turned them down. And they are certainly not invasive, that I know of.
Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)