Why you need Hydrangea Blue - Aluminium Sulphate
Deepen & brighten colour of blue hydrangeas
Lowers soil pH
Ideal for acid loving plants
How to use Hydrangea Blue - Aluminium Sulphate
Deepen & Brighten Blue Hydrangeas by applying 2 tbsp (approx. 30g) per square metre and water well.
To lower soil pH apply 2 tbsp (approx. 30g) per square metre and water well.