Credit: Vladyslav Varshavskiy / Getty Images Key Points Grass often turns brown in summer due to dormancy, compacted soil, pests, or improper mowing. Identifying your grass type helps determine if browning is normal dormancy or a sign of stress. Proper seasonal practices can prevent long-term damage. Having lush green grass is always the goal, but sometimes, your lawn will turn brown, even when it receives enough water. That's because adequate hydration isn't the only key to having healthy grass.