Getting the Right Lawn pH Levels


JULY, 2018

Lawn Care

If your lawn isn’t thriving like it usually does and it isn’t responding to fertiliser, it’s time to do a pH test. If the pH levels aren’t right, your lawn won’t absorb the essential nutrients it needs to grow and thrive.

A pH test will measure your lawn’s pH on a scale of acidic to alkaline. A healthy range for your lawn will be between 6 and 7.5, in the neutral area. In order to correct the pH levels, you will need to add lime or dolomite if the soil is too acidic or sulphate if it’s too alkaline.

Depending on your soil type, you will need to add different amounts of lime or sulphate to raise it one unit (Eg. From 5.5 to 6.5). For lime, a sandy soil will need 150g per square metre whereas heavy clay soils will need 250g. For sulphate, a sandy soil will need 25g, 50g for a heavier loam and 100g per square metre for heavy clays.

Test your soil again after a few weeks and repeat the process if you need to. Having good lawn pH will allow your lawn to absorb nutrients so it can continue to grow happily.

lawn pH levels
changing soil pH levels

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