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 412 spots.

Photo Sugikats (CC BY-SA 4.0) — via Wikimedia Commons
The hermitage of the 16th-century painter-monk Sesson Shukei, in the countryside near Miharu, with red spider lilies along its approach in autumn.