From late May through June 2025, Tokyo’s Katsushika Ward comes to life in full bloom for the annual Katsushika Iris Festival, a hidden gem among Tokyo’s many seasonal celebrations. While often overlooked by typical Tokyo itineraries, this vibrant district becomes a must-visit for flower lovers each spring, when thousands of irises blossom across two of the most picturesque parks in this quiet Tokyo neighborhood.

The Katsushika Iris Festival is held at both Horikiri Iris Garden (堀切菖蒲園/Horikiri Shobuen) and Mizumoto Park, each offering a unique setting to admire Japan’s beloved iris flowers in peak bloom. Horikiri Iris Garden, a historic site famous enough to appear in ukiyo-e woodblock prints by master artists, is a traditional garden where guests can stroll among carefully curated iris beds. Mizumoto Park is known for its sweeping iris fields near the river’s edge, perfect for a tranquil escape from the city center.

Together, these two locations showcase thousands of iris plants and hundreds of varieties, turning Katsushika into a floral wonderland. Whether you’re a photography enthusiast, a fan of traditional Japanese gardens, or simply looking for a peaceful seasonal event in Tokyo, the 2025 Katsushika Iris Festival is one historic Tokyo tradition you won’t want to miss.

2024 葛飾菖蒲まつり