Koiwa Iris Garden (小岩菖蒲園, koiwa shobuen) is a Iris garden located at the riverside of Odo River, Tokyo. There are 50,000 Iris in this garden which bloom in May to June. As the flower garden, it is famous in Tokyo Metro.

Tourist Info.
Admission Free.
There is a parking but it closed at night.
There is a restroom.

Access
0. at Ueno Station.
1. use Keisei Line to Edogawa
2. walk east (2 min.)