COMPO Bluemaker Hydrangeas is a mixture of trace elements that provides a deep blue colour of the petals of blue hydrangeas. The leaves can namely discolour if the necessary nutrients are lacking in the soil. The product is also 100% soluble in water.
Recommendations for applications
When planting your hydrangeas, use a COMPO soil improver specifically designed for hydrangeas. Then fertilize your hydrangeas with a COMPO fertilizer that meets the specific needs of hydrangeas. These products contain an optimal pH value (acidity) for acid-loving plants.