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Simple trick to make your hydrangeas change colour

Beautiful! - by Livia Gamble
  • 20 Apr 2018
Simple trick to make your hydrangeas change colour
Getty Images

If your hydrangeas aren’t producing the vibrant colours you had hoped for, you’ll be pleased to know there’s a simple way to change that. 

While this trick only works for pink or blue hydrangeas, it all comes down your soil's PH level.

purple hydrangeas

How to turn Hydrangeas blue 

Using a soil test kit, check the PH level of the soil. You can buy a soil testing kit from a local garden centre or hardware store. 

For blue hydrangeas, the soil should be acidic and have a pH level between 4.5 and 5.5. To increase the acidity of the soil, add iron sulfate or a soil acidifier near the base of the plant.

pink hydrangeas
Getty

How to turn hydrangeas pink

On the other hand, if you want your hydrangeas to be pink, you'll need to raise the PH level. According to www.bhg.com, "To raise the pH of acid soil, add ground limestone from a local garden centre or hardware store, or wood ashes from a fireplace or stove (this is called 'sweetening the soil')."

Have you tried this? Tell us about it in the comments. 

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Livia Gamble
Livia Gamble
Based in Sydney, Livia Gamble will not sleep until she has discovered every possible way to use bi-carb soda and vinegar. When she isn’t reporting on ways to improve your home and garden, she can be found knitting socks (by choice) and will never say no to pizza.

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YOU’LL NEED A WEDGE TO HANG THAT DOOR
Watch 6:32

YOU’LL NEED A WEDGE TO HANG THAT DOOR

{headline}

{headline}

The ultimate guide to Australian native flowers

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