Water won’t resurrect dead grass. In fact, it can make the situation worse. Dead grass grows no roots, so over-watering saturates and suffocates the soil. Watering will only prolong a plant’s life cycle and delay its inevitable death.
On top of that, drowning weaker grass swells competing weeds. Those weeds quickly thrive in wet conditions; they absorb more water and outcompete other plants in the affected area.
The cycle is then impossible to break: The bigger the weed problem, the less chance of grass growth, And reclaiming the area becomes even more expensive or unattainable over time.
The most aggressive root rot is caused by overwatering. Excess moisture forces out air from soil pores, which blocks essential oxygen from getting in to nurture root systems. When oxygen is blocked from getting into the soil, microorganisms begin to develop and create an extremely unhealthy environment for plant development—resulting in brown spots on lawns or greenery that grays as it dies off completely.
In order to have a successful outcome when trying to revive grass—or maintain a healthy landscape—it’s important to avoid creating an overly moist environment by ensuring that there there is appropriate drainage away from important areas like gardens and green spaces.