Yates Hydrangea Blueing Liquid Aluminium Sulphate Fertiliser & Soil Acidifer

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DescriptionApply to hydrangeas to produce and deepen blue coloured flowers. Supplies aluminium, which is needed to produce intense blue-coloured hydrangea flowers. An easy to use l iquid formulation, Yates Hydrangea Blueing Tonic is easy to dilute and apply with no handling of dusty powders. Features Soil pH affects the colour of hydrangea flowers Acidic soil (pH 4.5-5.5) will produce blue flowers Less acidic soil (pH 5.5 to 7) will produce pale, purplish flowers Alkaline soil (pH 7 to 8.5) will turn flowers pink IngredientAluminium (Al) as aluminium sulphate 2.5% w / v Show more