Mairol Vital Hydrangeas with Low pH Value, a Complete Mineral Fertilizer for all types of hydrangeas, heathers and camellias. The balanced quantities of main nutrients with a slightly reduced percentage of phosphates. The targeted supply of alum and iron chelate ensure healthy growth, a long flowering and maximum nourishment for chlorophyll. In the resting phase, do not carry out fertilization. The glass in the cap serves measuring cup: 2 ml of hydrangea fertilizer in 1 liter of water. Use acidic earth (pH value 4.5 - 5.5), avoid stagnation of water and watering with rainwater. Hydrangeas prefer dimly lit and cool locations Pour abundantly in the growth phase.