Yates Hydrangea Blueing Liquid Aluminium Sulfate 500ml

• 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

Application  change hydrangea flower colour to blue; maintain blue flower colour

Rate  Mix 20ml in 5L of water

Frequency  Every 3 to 4 weeks

Timing  Apply any time of the year or after winter pruning to adjust and maintain flower colour

Area  5L / 5m2: Apply to moist soil around plant

For optimum results apply as part of a soil treatment program with Yates Soil Acidifier.  This will help with reducing soil pH, while also supplying the aluminium necessary for blue flowers. Check the soil pH before and during treatment (at least every 3 months): the optimum soil pH to ensure blue flowers is 4.5-5.5. Do not reduce soil pH below this range as this could lead to plant damage. It is best to apply many smaller treatments rather than a single large treatment.

NOT TO BE USED FOR ANY PURPOSE, OR IN ANY MANNER, CONTRARY TO THIS LABEL UNLESS AUTHORISED