Ume (plum flower) Festivals in Tokyo area
Tokyo holds many gardens of Ume flower which blooms in February, and some Ume flower festivals will take place around the season.
Location: Tokyo and the surrounding area
Season: Middle February - Early March
For details, see this page: Ume viewing spots in Tokyo and the vicinity
https://tokyo.digi-joho.com/attractions/parks-gardens/90-ume-viewing.html