Product description:The fertiliser provides the plants with the nutrient aluminium alum, which is important for blue colouring. For continuous use, as the trace nutrients are already needed by the plants during bud set. For watering or sprinkling. Application:for: blue hydrangeasProperties:blue dyer with aluminium, iron and trace nutrients The nutrients are immediately water-soluble and therefore quickly available to plants With practical measuring spoon For watering or sprinkling applicationInstructions for use:You can dissolve COMPO BLUE HYDRANGEA in water according to the dosage instructions and water it or apply it to the soil, rake it in and then water it. Advantages of COMPO Blue Hydrangeas:Blue hydrangeas grow and thrive in acidic soils (pH value approx. 4-5). In neutral and calcareous soils, on the other hand, almost all varieties with blue flowers take on a pink or purple colour. White hydrangeas cannot be dyed. The nutrients contained in COMPO Blue Hydrangeas are immediately water-soluble and quickly available to plants. Dosage:With the watering can: Add one dosage (approx. 10g) per bush to 2-3 litres of water. One pack of COMPO Blue Hydrangeas is sufficient for 160L of irrigation water.By sprinkling on the soil: Sprinkle a dosage (approx. 10g) around each bush. For larger plants, give 2 dosages (approx. 20g). After fertilizing, water abundantly. Application period:Fertilise regularly every 4 weeks from mid-March to October.Recommended application times: middle of each month.Package size: 800 gUse by non-professional users permitted. This product information does not replace compliance with the instructions for use and does not claim to be complete. Always read the label and product information before use. Observe warnings and symbols in the instructions for use.