Wondering where to see hydrangeas in Osaka city? Look no further! Ikasuri Shrine is located in Hommachi, which is just north of the famous Shinsaibashi shopping and entertainment area. It's the best location to see hydrangeas in Osaka city, plus there's no entry fee. Hydrangeas in Japan bloom during the rainy season in Japan which tends to be around May-July. Be sure to visit Ikasuri Shrine in Osaka during hydrangea season! Entrance to Ikasuri Shrine is free.