To enhance the flower colour on hydrangea’s and other flowering shrubs – Growing Success’s Hydrangea colorant turns pink Hydrangea’s blue, and dark pink flowers mauve, it works best in acid soil.
In alkaline soil ericaceous compost should be added plus a double dose of colorant.
How to Use:- Hoe in one capful of colorant into the surrounding soil at a rate of one cap full per square metre Water with diluted colorant every seven days during the growing season. One cap full to every five litres of water.
Precautions:- Irritating to skin, gloves should be worn, wash hands and exposed skin with soap and water.
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