Hydrangea

Hydrangea is a captivating genus comprising over seventy species of flowering plants, predominantly found in Asia and the Americas. Known commonly by the same name, Hydrangea includes varieties such as H. macrophylla, which is often referred to as hortensia. This genus was first documented in Virginia, North America, yet it boasts its richest diversity in eastern Asia, particularly in countries like China, Korea, and Japan.

Most Hydrangea species are shrubs that typically reach heights of one to three meters, although some can grow into small trees or even lianas that extend up to thirty meters by climbing other trees. These plants can be either deciduous or evergreen, but the temperate species that are widely cultivated are primarily deciduous.

One of the most fascinating characteristics of many Hydrangea flowers is their ability to serve as natural pH indicators. The color of the flowers can change based on the acidity of the soil, producing blue blooms in acidic conditions and pink ones in alkaline environments. This unique trait adds to the allure of Hydrangeas, making them a popular choice among gardeners and horticulturists alike.