Mad About Lawns

What Does Nitrogen Do To My Lawn?

Using nitrogen fertilizer on your lawn can be a great way to promote healthy growth and maintain a lush, green appearance. It is an essential nutrient for plants and is responsible for the growth and development of leaves, stems, and roots. However, it’s important to understand the pros and cons of using nitrogen fertilizer and to use it correctly to avoid any negative effects on your lawn.

One of the pros of using nitrogen fertilizer is that it can help to promote the growth of your lawn, resulting in a thicker, greener lawn. It can also help to improve the colour of your lawn, making it look more vibrant and healthy. Additionally, it can help to improve the overall health of your lawn, making it more resistant to disease and pests.

However, there are also some cons to using nitrogen fertilizer. One of the main cons is that if too much is applied, it can cause the grass to grow too quickly, leading to a buildup of thatch. This can suffocate the roots of the grass and prevent it from receiving the water and nutrients it needs to survive. Additionally, too much of it can cause the grass to turn yellow or brown, giving the lawn a burnt or scorched appearance.


The best time to use nitrogen fertilizer on your lawn is typical during the growing season, which is usually from spring to autumn. It’s important to follow the instructions on the fertilizer package and apply it at the appropriate time. It’s also important to apply the right amount of fertilizer. A general rule of thumb is to apply 500g of nitrogen per 100 square meters of lawn.  Depending on the type and quality of the nitrogen, a well coated slow release nitrogen will typically be at a rate of 20 – 25g per meter per year.

At Mad About Lawns, our team of experts can help you with the application of nitrogen fertilizers for your lawn. We have the knowledge and expertise to determine the right amount and frequency of application, ensuring that your lawn receives the proper care it needs to thrive. By working with us, you can ensure that your lawn receives the right amount of nitrogen, at the right time, without any negative effects on your lawn