plant ウツギ・ヒメウツギ・マルバウツギの違いは？似た種類の見分け方を解説！生け垣の起源はウツギにあり！？
ウツギ・ヒメウツギ・マルバウツギはいずれもアジサイ科ウツギ属に含まれ、若い枝を除いて枝の中が空洞であることから「空木」と名付けられたと考えられています。日本では田植えの目安として植えられてきた歴史があり、生け垣の起源となったとも言われていま...
Hydrangea family
plant 
plant What are the differences between Gynostemma pentaphyllum, Cayratia japonica, and Hydrangea macrophylla (Amacha)? We'll explain how to distinguish between similar species! What are their uses? What is the structure of their flowers and fruits?
Amachazuru is a perennial vine that grows in mountainous areas and thickets in Japan, but it is often confused with Japanese knotweed (Yabugarashi) and amacha (sweet tea). Both Amachazuru and Yabugarashi have similar leaves (palm-foot compound leaves) and fruits (berries), and they are quite similar...
plant What are the differences between hydrangeas, lacecap hydrangeas, mountain hydrangeas, oakleaf hydrangeas, and American hydrangea (Annabelle)? We explain how to distinguish between similar varieties! Most of the flowers are just "decorations"!? What do the fruits, which are rarely seen, look like?
Hydrangeas, lacecap hydrangeas, mountain hydrangeas, oakleaf hydrangeas, and American hydrangeas (Annabelle) all belong to the genus Hydrangea in the family Hydrangeaceae, and are commonly cultivated and found in urban areas. Hydrangeas, in particular, are arguably representative of Japan. All of them develop large calyxes around the rainy season...