Permanent wilt occurs when a plant loses turgor pressure and cannot recover, leading to irreversible damage. This condition often results from prolonged water deficiency, where the plant's roots cannot absorb enough moisture from the soil. Once a plant reaches permanent wilt, its leaves may become dry and crispy, and it may not revive even with watering. Factors contributing to this condition include high temperatures, poor soil drainage, and inadequate root systems. Understanding plant physiology and water management can help prevent permanent wilt in gardens and landscapes.