What is Lawn Lime?

Lawn lime, also known as garden lime or agricultural lime, is a type of soil amendment that is commonly used to improve the pH level of acidic soils. It is made from crushed limestone or chalk and is rich in calcium carbonate. Lawn lime is typically applied to lawns, gardens, and agricultural fields to neutralize the acidity of the soil and provide essential nutrients to plants.

Why is pH Level Important for Lawns?

The pH level of the soil plays a crucial role in the health and growth of lawns. Most lawn grasses prefer a slightly acidic to neutral pH range of 6.0 to 7.0. When the soil becomes too acidic, below a pH of 6.0, it can hinder the availability of essential nutrients to the grass, leading to poor growth, yellowing, and thinning of the lawn. By raising the pH level of the soil with lawn lime, you can create a more favorable environment for the grass to thrive.

Benefits of Using Lawn Lime

There are several benefits to using lawn lime in your lawn care routine:

1. Corrects Soil Acidity: Lawn lime helps to neutralize the acidity of the soil, making it more suitable for grass growth. It raises the pH level of the soil, creating a balanced environment for the grass to absorb nutrients effectively.

2. Enhances Nutrient Availability: When the soil is too acidic, essential nutrients like nitrogen, phosphorus, and potassium become less available to the grass. Lawn lime helps to unlock these nutrients, making them more accessible to the grass roots.

3. Promotes Healthy Root Development: By improving the pH level of the soil, lawn lime encourages the development of strong and healthy root systems. This, in turn, enhances the overall health and resilience of the grass, making it more resistant to diseases, drought, and other environmental stresses.

4. Improves Fertilizer Efficiency: When the soil pH is within the optimal range, fertilizers are more effective. Lawn lime helps to maximize the efficiency of fertilizers by ensuring that the nutrients are readily available to the grass, resulting in better growth and greener lawns.

How to Apply Lawn Lime

Applying lawn lime correctly is essential to achieve the desired results. Here are the steps to follow:

1. Test the Soil: Before applying lawn lime, it is crucial to test the pH level of your soil. You can use a soil testing kit or send a sample to a local agricultural extension office for analysis. This will help you determine the amount of lime needed to raise the pH to the desired level.

2. Choose the Right Type of Lime: There are different types of lawn lime available, including fast-acting lime and pelletized lime. Choose the type that best suits your needs and follow the manufacturer’s instructions for application rates.

3. Apply the Lime: Spread the lawn lime evenly over the lawn using a spreader or by hand. Make sure to wear protective gloves and clothing to avoid skin irritation. Water the lawn thoroughly after application to help the lime penetrate the soil.

4. Monitor and Adjust: After applying lawn lime, monitor the pH level of the soil regularly to ensure that it remains within the desired range. If necessary, reapply the lime according to the recommended intervals.

Precautions and Considerations

While lawn lime is generally safe to use, there are a few precautions and considerations to keep in mind:

1. Avoid Overapplication: Applying too much lawn lime can raise the pH level of the soil excessively, leading to nutrient imbalances and other issues. Follow the recommended application rates and guidelines provided by the manufacturer.

2. Use Protective Gear: When handling lawn lime, it is advisable to wear protective gloves, goggles, and a dust mask to prevent skin and eye irritation. Avoid inhaling the dust and wash your hands thoroughly after application.

3. Consider Soil Type: Different soil types may require different amounts of lawn lime. Sandy soils, for example, may require less lime compared to clay soils. Consider the specific needs of your soil and adjust the application rates accordingly.

4. Consult a Professional: If you are unsure about the proper application of lawn lime or have specific concerns about your lawn, it is recommended to consult a professional landscaper or horticulturist for guidance.


In conclusion, lawn lime is a valuable soil amendment that can help improve the pH level of acidic soils and promote healthy grass growth. By understanding its benefits and following the proper application techniques, you can create a lush and vibrant lawn that will be the envy of your neighborhood.