Smart Irrigation Starts with Smart Watering

By Patrick Dickinson

When most people hear the word irrigation, they immediately think of an automatic sprinkler system. In reality, irrigation is a much broader term. Whether you are standing at the end of a garden hose, using a sprinkler attached to that hose, or operating a fully automated irrigation system, you are irrigating.

The important thing to remember is that irrigation should supplement the lack of rainfall, not replace it. Rainfall is nature’s preferred way of watering our landscapes and should always be our primary source of moisture whenever possible.

Water Is a Valuable Resource

Water is one of our most valuable resources. In many communities, as much as 70% of municipal water use ends up in the landscape. While healthy landscapes provide beauty, environmental benefits, and enjoyment, we must also be mindful that treated drinking water is a resource intended first for human consumption.

One of the best ways to reduce outdoor water use is by incorporating native and adaptive plants into the landscape. These plants have evolved or proven their ability to thrive in our local climate with less supplemental irrigation, making them both environmentally responsible and easier to maintain.

Understanding Heat Wilt

It is also important to recognize that a wilting plant does not automatically mean it needs water. Before reaching for the hose, check the soil moisture. If the soil still has moisture, afternoon wilting during extreme heat is often a natural response known as heat wilt.

Heat wilt occurs when a plant loses moisture through its leaves faster than its roots can absorb it from the soil. To protect itself, the plant temporarily droops its leaves, reducing sun exposure and conserving moisture. In many cases, the plant will recover on its own as temperatures cool later in the day. Hibiscus is a great plant example that does this often during the heat of the summer.

Water Deeply, Not Frequently

Another important principle of efficient irrigation is watering less frequently but more deeply. Frequent, shallow watering encourages roots to remain near the soil surface where temperatures fluctuate the most and moisture disappears quickly. Deep, infrequent watering encourages roots to grow deeper into the soil in search of moisture. The result is a stronger, more resilient root system that is better equipped to withstand North Texas extremes, including winter cold, summer heat, and periods of drought. Plants with deep root systems are often healthier, more stable, and less dependent on supplemental irrigation over time, making them better prepared for whatever Mother Nature delivers.

Smart irrigation is not about applying more water. It is about applying the right amount at the right time. By relying on rainfall when possible, choosing hardy plants, and understanding how plants respond to heat, we can create healthier landscapes while being good stewards of one of our most precious resources.