Now is a good time to see the autumn colors of summer cypress (Bassia scoparia or Kochia scoparia) plants in Oishi Park in the town of Kawaguchiko in Yamanashi Prefecture, Japan.
Summer cypress, Oishi Park, Kawaguchiko, Yamanashi, 10/11/2025
https://en.wikipedia.org/wiki/Bassia_scoparia; https://www.fujioishihanaterasu.com/en/
Cosmos flowers, Oishi Park, Kawaguchiko, Yamanashi, 10/11/2025
https://en.wikipedia.org/wiki/Cosmos_(plant)
Woolly lavender (Lavandula lanata), Oishi Park, Kawaguchiko, Yamanashi, 10/11/2025
https://en.wikipedia.org/wiki/Lavandula_lanata
Black bent (Agrostis gigantea), Kawaguchiko, Yamanashi, 10/11/2025
https://en.wikipedia.org/wiki/Agrostis_gigantea
Invasive alien plant species, Tall goldenrod (Solidago altissima), Kawaguchiko, Yamanashi, 10/11/2025
https://en.wikipedia.org/wiki/Solidago_altissima; https://en.wikipedia.org/wiki/Solidago_canadensis
https://en.wikipedia.org/wiki/Invasive_species
Also, please refer to the article on August 19, 2025: Notorious Invasive Alien Plant Species in Yamanashi: https://yamanashietsuo.net/notorious-plant-invasive-alien-species-in-yamanashi/