BETTER GROWTH IN ACID SOIL
Many plants can use as an indicator for acidic soil, such as Rubber, Tea, Fern, and Melastoma sp.
Azalea also can use as indicator of acidic soil, while it has a beautiful flower.
The are two kind of Azalea’s flower shape: single and double corolla.
In the area of rubber or tea plantation, Azalea grow normally. It become plant yard houses’ orchard.
In fact, Azalea plants can grow normally in Malang, East Java, where I life, as like as pictures below:
All growth is pictured above in a medium pot fertile. Organic materials can make acidic soil reaction, because of the carboxylic acid group.
Plants also get water or fertilizer when it need.