Watering Tips for Gardening in Dry Weather - Water early in the morning for deep soaking and less evaporation. Evening or night watering can increase disease problems. - Water deeply but infrequently to promote deep roots that can reach moisture. About 1 inch of water per week is usually adequate. - Use drip irrigation or soaker hoses for fruit and vegetable gardens as they are more efficient than sprinklers and cause fewer diseases. Mulch garden areas to conserve soil moisture.