Official

　Hydrangea is a general term for hydrangeas in the broad sense, a deciduous shrub hydrangeas in the broad sense. In narrow sense, it refers to a horticultural variety that was born in Japan with bigleaf hydrangea, which is derived from the "forehead blooming" in which ornamental flower (selyx) borders around a large number of bisexual flower (ornamental flower).　　　　　　　　　　　　　　The ancestor, bigleaf hydrangea, Ezo Hydrangea and Yama Hydrangea grow naturally in Japan, and there are many varieties, and it is said that there are differences in form and flower color depending on the nature of the region and soil.　　　　　　　　　　　　　　　　　　　Although the etymology of hydrangea is unknown, the appearance of blue flowers gathering together suggests that "Azusa Ai", which means "a collection of indigo colors", has been accented.　　　　　　　　　　　　　　　　At the Hamarikyu Garden, bigleaf hydrangea, Hon Hydrangea and Yama Hydrangea are at their best, planted around the water bus stop, along the seaside bridge, and around Mt. Fujimi.　Since ancient times, wild hydrangea, which grows naturally mainly on the Pacific side west of the Kanto region, has small flowers, leaves, thin branches, and the whole plant has a delicate atmosphere and is rich in wildness, is often used for tea flowers and is among wild grass lovers. I hear it is very popular.　　　　Compared to bigleaf hydrangea, it is also called "Kogaku" because of its small size, and "Sawa Hydrangea" because it tends to grow along moist forests and swamps.