In fact, our name for Hydrangea is not a very accurate one. Its standard Chinese name is baxianhua, also called Yin hydrangea. In general, people or flower market are used to call Hydrangea the flower that blooms a lot and becomes a hemispherical or spherical corolla, so it is a kind of relatively complex species. The hydrangea we usually call refers to the hydrangea.
The so-called Hydrangea is actually a perennial herb called Pelargonium in Chinese. Its flowers are also very spherical, but the colors are much richer than hydrangea. There are many kinds of white and pink colors, and there are many flower types and colors. There is another kind of geranium leaves will have a peculiar smell after touching, so there is also a place called Begonia.
According to the above, Hydrangea and Hydrangea are not the same kind of flowers, and their families and genera are different in their biological positions. Hydrangea is a member of the geranium family.