The cherry tree in blossom is the classic image of beauty that does not last. Japanese tradition reads it as a reminder to treasure the moment, so the dream is read as tenderness toward something fleeting.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.