Hydrangea Colourant 250g

If you're looking to transform your pink hydrangeas into stunning blue blooms, Hydrangea Colourant is the perfect solution. This product works by altering the soil's pH, enabling your hydrangeas to absorb iron and aluminium salts that promote blue flowers. Best used in acid soil, the colourant ensures vibrant blue flowers for pale pink varieties and beautiful mauve hues for darker pink varieties. For optimal results, apply to both potted and outdoor hydrangeas.

HOW TO USE

1. Potted Hydrangeas: Mix one part Hydrangea Colourant to 30 parts potting soil when planting. During growth, water weekly with 30g of colourant per 5 litres of water.
2. Outdoor Hydrangeas: Mix one part colourant to 30 parts soil when planting. Water weekly with 30g per 5 litres of water during the growing season. Apply directly to the area covered by the hydrangea bush.

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