How to adjust soils PH

Method 1 of 2: Increase the pH

1. Add a lime source to make the soil less acidic.

2. Select your lime source depending on the needs of your plant. Some lime sources contain micronutrients like dolomite, which is a mixture of calcium and magnesium carbonates. Wood ashes also provide lime with the addition of other micronutrients including potassium, phosphate, boron and other elements. Standard lime comes in 4 types of ground limestone forms: pulverized, hydrated, granules and pellets.

3. Apply the liming source 2 to 3 months before planting (usually in the autumn or winter) so there is plenty of time for the pH to change.

4. Mix the lime thoroughly into the soil because most liming sources are not very water-soluble.

5. Water the soil regularly after adding the lime. Water activates the lime source to reduce acidity.

Method 2 of 2: Decrease the pH

1. Add sulphur or aluminium sulphate to the soil to make it more acidic. Both supplements are found at most garden supply stores.

2. Make an immediate decrease in the soil pH by adding aluminium sulphate, which produces instant acidity due to the aluminium content.

3. Increase the soil's acidity slowly by using sulphur. Sulphur works in combination with the soil's moisture, temperature and bacteria to lower the soil ph.

4. combined the sulphur or aluminium sulphate into the soil thoroughly.

5. Wash the sulphur or aluminium sulphate off any plant leaves that it comes in contact with to avoid burning the plant.