- If your lawn is not performing very well or not responding to fertiliser this could be the soils pH.
- pH is a measure of acidity and alkalinity.
- Sir Walter lawns like to be in the 6 to 7.5 range for optimum performance.
Adjusting the pH is easier on loamy and sandy soils than on heavy clays:
- If your soil is a sandy loam and you need to raise the soil pH by one unit add the equivalent of 150g of liming material per square metre.
- Heavy clay soils will require at least 250g to raise the pH by one unit.
- A super fine grade of lime works quickest and generally costs around $8 a bag.
For established lawn which may be lacking magnesium:
- Mix 50/50 lime and dolomite as the liming material, to get the right balance of calcium and magnesium.
- Dolomite is only available in one grade and costs around $8 a bag.
- After applying lime or dolomite make sure you water them well so that it moves into the soil.
Testing the soil’s pH with one of the soil pH test kits:
- All you have to do is follow the instructions and it even tells you how to make the changes.
- You can get all the products you will need here at our online Lawnstore.