Understanding Soil pH and Its Impact On Guelph Lawn Health

Soil pH plays a vital role in the overall health and maintenance of your Guelph lawn. In this article, we will discuss the importance of soil pH, how to test and adjust it, and how it impacts your lawn’s nutrient availability and overall well-being.

What Is Soil pH?

a person in blue gloves holding a pipe.

Soil pH is a measure of the acidity or alkalinity of your soil. It is measured on a scale of 0 to 14, with 7 being neutral. A pH below 7 indicates acidic soil, while a pH above 7 represents alkaline soil. Most grass types in Guelph prefer a slightly acidic soil pH, typically between 6.0 and 7.0.

Importance Of Soil pH In Lawn Health

The pH of your lawn’s soil affects the availability of essential nutrients, as well as the activity of microorganisms that contribute to a healthy soil ecosystem. An improper soil pH can lead to nutrient deficiencies, reduced growth, and increased susceptibility to pests and diseases.

Testing Your Guelph Lawn's Soil pH

To determine the pH of your lawn’s soil, you can use a soil test kit, a pH meter, or send a soil sample to a local laboratory for analysis. It’s essential to test the soil pH regularly to monitor any changes and make necessary adjustments.

a close up of a meter in the dirt.

Adjusting Your Lawn's Soil pH

If your lawn’s soil pH is outside the optimal range for your grass type, you can take the following steps to correct it:

For acidic soil: Apply lime to raise the soil pH. Use a calcitic or dolomitic lime, depending on your soil’s calcium and magnesium levels.

For alkaline soil: Apply sulfur or acidifying fertilizers to lower the soil pH. Be sure to follow the product’s instructions and apply in moderation to avoid over-acidification


Maintaining the proper soil pH is essential for a healthy, thriving Guelph lawn. By regularly testing your lawn’s soil pH and making necessary adjustments, you can promote nutrient availability, support a healthy soil ecosystem, and ensure a lush, green landscape.

a thermometer sitting on top of a pile of dirt.

FAQs On Soil pH and Guelph Lawn Health

How often should I test my lawn’s soil pH?

It’s recommended to test your lawn’s soil pH at least once every two to three years. However, if you notice signs of nutrient deficiencies or other issues, consider testing more frequently to monitor any changes and make necessary adjustments.

Can I use household items to test my soil pH?

While there are some DIY methods for testing soil pH using household items like vinegar and baking soda, these methods are not as accurate as using a soil test kit, pH meter, or sending a sample to a laboratory. For the best results, use a reliable testing method to ensure accurate measurements.

How long does it take for lime or sulfur applications to affect soil pH?

The time it takes for lime or sulfur applications to change soil pH depends on the type of product used and the soil’s properties. Generally, you can expect to see changes in soil pH within a few weeks to a few months after application. Be patient and continue monitoring your soil pH to ensure it reaches the desired level.


Colin Thomas MacMillan

Colin Thomas MacMillan, CEO of Riverwood Landscape, boasts over 8 years of expertise in landscaping and 3 years in transportation and logistics. A prominent figure, he serves as a board member for the Waterloo Chapter of Landscape Ontario and has been a vital part of the community for five years. Recognized for his insights, Colin has contributed to major industry events, including LeadsCON 2023. His entrepreneurial journey in landscaping began post-high school, driven by a lifelong aspiration and self-taught skills. Outside work, Colin's interests span history and video games, and he's dedicated three years to learning German, reflecting his commitment to personal growth. His professional ethos emphasizes a resilient, people-first approach, advocating for mastering current tasks and prioritizing quality in business and client relations. An avid reader of industry articles and an active networker, Colin's dynamic approach to professional development cements his status as a leader and an inspiration in landscaping and logistics.

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