Garden · Kita-Koiwa

Koiwa Iris Garden 小岩菖蒲園

A free iris garden on the Edogawa riverbank in Kita-Koiwa with around 50,000 irises of 100 varieties, viewed from wooden walkways; a quieter alternative to Horikiri in June.

HoursAlways open

ClosedOpen daily

PriceFree

Getting thereKeisei Edogawa Station (Keisei Main Line), 10 min; Koiwa Station (JR Sobu Line), 25 min

Time needed30-45 min

Best timeEarly to mid-June

Address4-chome Kita-Koiwa (Edogawa riverbank), Edogawa City, Tokyo

About

Opened by Edogawa ward in 1982 on the floodplain of the Edogawa, Koiwa Shobuen packs around 50,000 Japanese irises of some 100 varieties into beds crossed by wooden plank paths, with a wisteria trellis, a small pond and a Japanese-style rest house. Because it sits right below the river embankment, you can climb up afterwards for big skies and views across to the Konodai bluff in Ichikawa. Admission is free, theres no commercial bustle, and in early to mid-June its one of the most photogenic iris displays in Tokyo.

Highlights

Around 50,000 irises of 100 varieties
Wooden plank walkways through the beds
Wisteria trellis in May
Edogawa riverbank views

Tips

Peak bloom is usually early to mid-June.
From Koiwa Station take a bus or walk about 25 minutes; Keisei Edogawa Station is closer (about 10 minutes).
Combine with the Edogawa riverside walk north to Shibamata.

Open in Google Maps · Info checked 2026-10-09

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Koiwa Iris Garden 小岩菖蒲園

About

Highlights

Tips

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