Hydrangea Blooming and the Start of the Rainy Season

The Japan Meteorological Agency announced the start of the rainy season in the Kanto-Koshin and Tokai regions on June 7, 2026. Hydrangea flowers, known as ajisai in Japanese, bloom perfectly in time with tsuyu, Japan’s rainy season. https://www3.nhk.or.jp/nhkworld/en/news/20260607_11/

Bigleaf hydrangea (Hydrangea macrophylla): https://en.wikipedia.org/wiki/Hydrangea_macrophylla

Bigleaf hydrangea, Koinji, Kofu-shi, Yamanashi, 6/08/2026

Hydrangea macrophylla cv. ‘Uzuazisai’: (In Japanese) https://www.kobe-park.or.jp/cgi-bin/rikyu/zukan/index.cgi?file=zukan&mode=detail&select=1302349118; https://kawasakimidori.main.jp/webzukan/ajisai_p2.html

Hydrangea macrophylla cv. ‘Uzuazisai’, Koinji, Kofu-shi, Yamanashi, 6/08/2026

Hydrangea macrophylla cv. ‘Shirotemari‘: https://www.kazahayanosato.com/shirotemari/

Hydrangea macrophylla cv. ‘Shirotemari‘, Koinji, Kofu-shi, Yamanashi, 6/08/2026

(In Japanese) https://green.sagamiharashi-machimidori.or.jp/%E7%B7%91%E5%8C%96%E6%84%8F%E8%AD%98%E3%81%AE%E6%99%AE%E5%8F%8A%E5%95%93%E7%99%BA/%E3%82%A2%E3%82%B8%E3%82%B5%E3%82%A4%E5%9B%B3%E9%91%91