Cherry blossom is three weeks of it. Flip through the other forty-nine — and watch what's in bloom move up and down the country.
The calendar is the way in. Underneath it sits the ordinary thing — search, filter by month or flower, and open any of the 444 spots.

Photo Abasaa (Public domain) — via Wikimedia Commons
The deigo, Okinawa's prefectural flower, comes into bright-red bloom across this large sports park in Okinawa City in spring, and the fallen flowers turn the lawns into a red carpet that draws photographers.