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 429 spots.

Photo KENPEI (CC BY-SA 3.0) — via Wikimedia Commons
A temple in the pottery town of Mashiko whose kinmokusei, estimated at 200 years old, is a town natural monument; local tradition says parishioners gave it when the main hall was built. The temple is also known for a weeping cherry over 180 years old.