What practice is essential for maintaining a healthy lawn?

Regular mowing at the correct height is essential for maintaining a healthy lawn because it encourages grass to grow denser and stronger. Mowing helps manage the growth of weeds and promotes better air circulation, which can improve the overall health of the lawn. Additionally, maintaining the appropriate cutting height depending on the type of grass helps prevent stress on the plant, facilitates photosynthesis, and reduces the chances of disease. Grass that is mowed too short can become susceptible to heat stress and drought, while mowing too high can hinder proper penetration of sunlight.

In contrast, while using chemical fertilizers can provide nutrients to promote growth, relying solely on them without proper mowing practices can lead to unhealthy lawn conditions. Pruning trees and shrubs frequently might benefit landscapes by improving light exposure and airflow, but it does not directly relate to lawn health. Overwatering during dry seasons can lead to waterlogged conditions, which might promote fungal growth and root rot, harming the grass rather than helping it thrive. Thus, regular mowing at the correct height is the foundational practice for a vibrant and healthy lawn.