地元の「埼玉県花と緑の振興センター」へ行ってきました。たくさんの花と樹木が植えられていました。アジサイも咲いていました。
Pictures show Hydrangea in Kawaguchi city, Saitama,
【Bon appétit !】
In Japan, ama-cha(甘茶)meaning sweet tea, is another herbal tea made from Hydrangea serrata(山紫陽花), whose leaves contain a substance that develops a sweet taste (phyllodulcin). For the fullest taste, fresh leaves are crumpled, steamed, and dried, yielding dark brown tea leaves. Ama-cha is mainly used for kan-butsu-e (the Buddha bathing ceremony) on April 8 every year—the day thought to be Buddha's birthday in Japan.
(https://en.wikipedia.org/wiki/Hydrangea)