(First upload on Jan. 8 2008. Last on September 5 2023) [ 日本語 | English ]

Weigela hortensis (Siebold et Zuccarini) K. Koch

Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily

Weigela Thunb. (タニウツギ)
Tani·utsugi (タニウツギ, 谷空木) (many other Japanese common names), (oldfashioned) weigela
Beni-utsugi (ベニウツギ, 紅空木)
Lifeform: deciduous shrub < 5 m in height
Distribution: endemic to Japan (from western Hokkaido to Japan Sea-side of Honshu)
Habitat: disturbed areas, including secondary forests (often developing the shrublands)

Mount Koma (flora)

Flower: pink ↔ W. middendorffiana: pale yellow
Leaf: dense, white hair on the back (developed by this species only in Weigela)
Utilization: gardening, medicine, food (bud), etc.
f. albiflora (Sieb. et Zucc.) Rehder (シロバナウツギ, シロバナタニウツギ)

Weigela hortensis in Hokkaido

Mount Koma

Weigela01 Weigela02 Weigela03
Weigela04 Weigela05 Weigela06
[1] on the southwest slope on July 4 2002. [2] at the summit on June 15 2010. [3] on the southwest slope on June 11 2002, and [4/5] on June 18 2014. [6] on June 20 2022.


Weigela1 Weigela2 Weigela3
Weigela4 Weigela5 Weigela6
[1] at a riverside for field training on integrated environmetns near Usujiri, southern Hokkaido, on June 16 2015. [2/3] probably a transplanted tree in front of the office building of Shizunai Experimental Farm of Hokkaido University, south-central Hokkaido, on June 17 2016. [4-6] in an area where the Otaru-Yoichi wind farm was planned on June 15 2023.