The iris garden at the Edogawa River Bank is filled with 50000 iris flowers in 100 different varieties. Admission is free.

Koiwa Shobu-en Iris Garden Festival
小岩菖蒲園まつり

Koiwa Shobu-en 小岩菖蒲園 is a public garden in Edogawa Ward.

June 3rd(Sat)  - June 18th(Sun) 2017

Venue: Koiwa Iris Garden, Edogawa Ward, Tokyo

The gate opens: 
8:30-18:00 between April and Spring
8:30-17:00 between October and March

Getting there
5-min walk from Edogawa Station 江戸川駅 on the Keisei-honsen Line 京成本線
*Take a regular station as express trains pass the Edogawa Station. If you take an express train, change the train at a large station for transfer such as Aoto Station or Keisei Yawata Station.

Google Maps: Koiwa Iris Garden
https://goo.gl/maps/Vormpc9Du4H2