Going to see Sakura is always a risk, I happened to be there once on business, and by chance, saw the trees in all their glory. This was in Tokyo, and I was playing golf, with the trees covering parts of the course. The Sakura season, so to speak, starts in the far south, and moves north, so if you have time, you can travel to the right place. There is a dedicated media channel that gives you all the info. And if you are lucky you can attend one of the many Sakura parties!