The hydrangea belongs to a class of plants called oxyphylls and includes the gardenia, hydrangea, camellia, azalea and rhododendron. They are called so (acid+friend) because they need acidic soil to grow.
What does this mean;
To cultivate such species, we must use some leafy soil, such as brown soil or heath soil, or some soil mixture rich in peat, preferably blond.
Why are its leaves turning yellow?
The usual causes of yellowing of their leaves and their peripheral drying are the lack of iron or the high pH that occurs when we put the classic commercial mulch.
These plants need special soils with a low pH, such as Florabella For Oxyphylla, which you can get from our site at the following link: https://www.garden-for-all.com/product-page/florabella-%CE %B3%CE%B9%CE%B1-%CE%BF%CE%BE%CF%8D%CF%86%CF%85%CE%BB%CE%BB%CE%B1
