Seeing how people don't really seem to be getting what "Blossom" is all about (I bet they're not even bothering to read the sypnosis), I decided to stop refraining myself and, unwillingly but altruistically, point out what one should be aware of in regards of this anime, because someone might effectively need it.
Rather than stating it simply as a "Story" you should know that it mainly wants to convey a message. "Blossom" is not about God, Angels, or even nature itself, it is about hope. It's about being the Cherry Blossom that struggles really hard to survive the intense cold of winter, and, even after
all of this, is still able to bloom beautifully. It is about never stop believing that "Your winter won't fail to become spring", and how important it is to actually care about what life provides you. Hope is something people are undoubtly, and seemingly, nonchalantly, lacking, and that's why we should everyday fill our heart up with some of it.
Technically speaking, I'd say it lacks a more focused approach, on the direction principally. On the music, Sigur Rós is the reason why I found this on the first place. They're my favourite band ever, and ironically "Hoppípolla" is all about this feeling of incessantly renew yourself and never give up on life.
So, to sum it up, do expect that wild flower to blossom one day, and then, please, appreciate it. It's life.