Oh, also there's a few Japanese cherry varieties that have a lower chilling requirement and do much better in climates that don't have winter cold.
kanzakura, okame, and youkouzakura are three such relatively low-chill cultivars in Japan
Taiwan cherry (Prunus campanulata, also called Formosan cherry, and called kanhizakura in Japan) is one that is very popular in the U.S. in parts of the South.
It has a deep bright magenta color.
Pink Cloud is another one (it probably derived from P. campanulata pollinating a white flowered serrulata variety)
You might look up pictures of all of them, but in my personal opinion none of these lower chill varieties really have as attractive flowers as other varieties of Japanese cherry cultivars.
Despite the supposed chill hour requirement, it is possible for the standard Yoshino cultivar to grow and put out blossoms in climate zone 10.
I grew a very small one. I think they had more difficulty dealing with the heat and dryness than they did coming out of dormancy in the Spring.
All the very small Japanese cherries that were on their own roots survived. The one large one that was on grafted rootstock didn't survive, and I'm pretty it was in substantial part because it couldn't handle the lack of chill and just didn't have the vigor to really leaf out.