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 星組背番号10 (CC BY-SA 3.0) — via Wikimedia Commons
About 50 kinmokusei line a path of some 300 m along the south side of the park's bird sanctuary, and three tall old trees stand in Yurinoki Plaza, so the scent fills the walk for a week or so around the start of October. Free.