News — aluminium sulfate

How to Change the Colour of Hydrangea Flowers Using Aluminum Sulfate Hydrangeas are one of the most beloved garden plants across the UK, known for their lush blooms and striking colours. While many gardeners enjoy their natural shades of pink, blue, purple and white, some seek to control or alter these hues – especially in soil-sensitive flowers like hydrangeas. One of the most reliable and widely used methods to influence hydrangea flower colour is by adjusting soil chemistry with aluminum sulfate. In this comprehensive guide, we’ll explore: Why hydrangeas change colour The role of soil pH and aluminum availability How...