Good question.

I'm genuinely curious if there's a specific answer to the cherry/blossoms significance. I do know about the flowers and what the smiling flowers represent, but was the extension to cherry blossoms and cherries simply coincidental? .......... I guess I just assumed that the cherry blossoms became a natural extension of the "flowers theme", because: 1) well they *are* flowers, and he has such a significant flower theme otherwise, and 2) the cherry blossom time and festivals are such a big celebration in Japan.
And then what do cherry blossoms produce but --- cherries!

I guess I thought his flow was just flowers --> Japan's big flower celebration --> cherry blossoms! --> produce cherries. .........Actually, now that I'm thinking about it, the cherry blossom festivals are considered so quintessentially Japanese .... just like his claimed reason as to why the flowers are smiling in general. ....(Thinking. Maybe that's the answer.)