City of Redding Watering Basics

Redding and much of the surrounding area has clay soil, which does not absorb water quickly. In fact, runoff can occur after running some sprinklers for as little as five minutes. Precise watering times differ depending on the type of watering device, slope, soil and plants being watered.

The correct irrigation system, when properly scheduled and maintained, can result in significant water savings and lower water bills. The goal of an efficient watering schedule is to irrigate using only the amount of water that is needed by the types of plants that are used.

Potable water should be applied to outdoor landscapes in a manner that does not cause runoff such that water flows onto adjacent property, non-irrigated areas, private and public sidewalks, roadways, parking lots or structures.

What Time of Day Should I Water?

The best time of day to water most lawns, gardens, and landscape plants is early morning. This timing allows water to absorb deeply into the soil with minimal loss to evaporation before the heat of the day, and helps plant foliage dry quickly, reducing the risk of fungal diseases. Watering in the evening is less ideal, as it can leave foliage wet overnight, promoting fungal growth.

Why early morning is best:

·         Reduces evaporation:

Cooler temperatures and calmer winds mean more water reaches the plant roots instead of evaporating into the air. 

·         Prevents disease:

Plants have the rest of the day to dry off, which is crucial for preventing fungal diseases. 

·         Optimal absorption:

Water can penetrate the soil and reach the roots before the plant starts losing water to the heat. 

Why other times are less ideal:

·         Midday/Afternoon: High heat and sun cause rapid evaporation, making watering less effective. 

·         Evening/Night: Wet foliage can remain damp for extended periods, creating ideal conditions for fungal and other diseases. However, this is less of a concern if you are using drip irrigation or soaker hoses, which deliver water directly to the soil and avoid wetting the foliage. 

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