Early Sep – Late Oct 2026 A cosmos festival in Tokyo, Showa Kinen Park displays approximately 6 million flowers from over 30 species across its large fields.
Showa Kinen Park, Tachikawa The Kochia Carnival is a seasonal event at Hitachi Seaside Park. In October, 33,000 kochia bushes turn red on a hill, where cosmos flowers also bloom.
Hitachi Seaside Park, Hitachinaka A moon viewing event in Tokyo, Mukojima-Hyakkaen garden displays hand-painted lanterns and features traditional music performances to recreate an Edo-period aesthetic.
Mukojima Hyakkaen Garden, Sumida An autumn leaves festival in Tokyo, this November event on Mount Takao features foliage viewing and weekend cultural performances like taiko drumming.
Kiyotaki Station, Hachioji Late Oct – Early Nov 2026 A chrysanthemum exhibition in Tokyo, held since 1915, displays approximately 2,000 flowers. Visitors can buy seeds and learn how to grow the plants.
Hibiya Park (Kusachi Hiroba), Chiyoda 
