Which environmental factor most influences the health of a lawn?

Sunlight exposure plays a crucial role in the health of a lawn because it directly affects the process of photosynthesis, which is fundamental for plant growth. Grass relies on sunlight to convert carbon dioxide and water into energy, enabling it to thrive and maintain its vibrant color and strength. Without adequate sunlight, grass can become weak, prone to diseases, and struggle to outcompete weeds.

While other factors such as soil fertility, water availability, and temperature variations are also important for maintaining a healthy lawn, sunlight exposure is the primary driver for photosynthesis, making it essential for grass health. Soil fertility provides nutrients, water availability ensures hydration, and temperature variations can affect growth rates and stress levels; however, without sufficient sunlight, these other factors may not be fully effective in supporting a healthy lawn.