North Carolina Building Contractor License Practice Exam

What is the preferred method of cutting grass to maintain its health?

1. Cut all blades at once

2. Cut no more than one-third of the blade

3. Cut often and lightly

4. Cut during the morning only

The correct answer is: Cut no more than one-third of the blade

The preferred method of cutting grass to maintain its health is to cut no more than one-third of the blade at a time. This technique is known as the one-third rule and is essential for maintaining the grass's health and vigor. When only a portion of the blade is trimmed, the grass is able to photosynthesize effectively, as this process primarily occurs in the leaves. Cutting too much of the blade can shock the grass, reduce its ability to recover, and make it more susceptible to stressors such as drought, pests, and diseases. Additionally, adhering to this method allows for more consistent and even growth, which can help achieve a fuller and healthier lawn over time. This approach also promotes a stronger root system, as the grass can focus its energy on growing rather than recovering from an excessive cut. Therefore, cutting no more than one-third of the blade is a vital practice for healthy grass maintenance.