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(First upload on October 12 2010. Last on October 20 2020) [ 日本語 | English ]

Cosmos Cav. (オオハルシャギク) Kosumosu (コスモス, 秋桜), Garden cosmos (Mexican aster) O-harusyagiku (オオハルシャギク, 大春車菊) Akizakura (アキザクラ, 秋桜) Life form: half-hardy annual forb Distribution: originally in central America (extotic to Japan) Habitat: drained, sunny habitats (ornamental, often transplanted on skislopes) Field training on integrated environmental research (統合環境調査法実習) (出現種リスト)

Flowering: two to three months after germination Germination: about 10 days at 25°C after sowing Varieties (cultivars): Sensation, Versailles and Sonata, Daydream, Seashells, and many others

Cosmos bipinnatus in Japan

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1 2 3 4
5 6 7
[1/2] in front of the rear gate of Hokkaido University of Education at Hakodate on September 21 2010. [3/4] under a street tree at N28/E2, East Ward, Sapporo, on September 24 2015. [5] in a flower garden on Lake Hill Farm, Toya, central Hokkaido, on July 10 2019. [6] sharp tops found in a small flower garden udner a street tree in N18/W4, Sapporo, on August 5 2019. [7] a tiny one beside the Hokkaido University Hospital Post Office on October 6 2020.