It is essential to know when to water, how often, and even more important, how deep to water. These factors are crucial for the success of any landscape type. Here we will discuss these topics and help ensure adequate irrigation throughout the hottest months in the Phoenix area. The best time of the day to water your trees and plants is in the early morning. The ideal time to turn your drip system on and give your plants a good drink for the day is between 4:00 am and 6:00 am. As temperatures rise in the summertime, the trees and plants in your yard will need to maintain adequate moisture to ensure proper growth and root establishment. It also helps to prevent any wilting, burning, or stress associated with higher summertime temperatures. Stay away from watering during mid-day, evening, or nighttime. Midday irrigations are often too late and can cause thirsty trees to stress more. Watering in the evening time, especially during moist or humid nights, will promote mold and fungal growth that can affect your plant or your tree's overall health.
Watering in The Desert Can Be Tricky
Now that we know the right time of day to water, it’s necessary to understand how deep, and how often, to water. Most new trees or plants will benefit from being watered every day for the first week.
Watering Depths
For ground covers or smaller shrubs, ensure that your water is getting into the soil at least 12 inches deep.
For medium-to-large shrubs, your water should reach 12 to 18 inches deep.
For trees, the water should reach 2 to 3 feet deep.
To check the depth of the water and make sure it drenches the soil, you can use a piece of rebar, a dowel rod, or one of the two-foot planting flags that we have here at the nursery. You will want to probe the soil and several different areas around the initial planting area and ensure that the water is getting to the depths recommended.
If you are probing the soil and the rods only going down one foot into the ground, probe other areas, and if you’re still reaching a depth of one foot, then you know you are not watering long enough. You can now adjust your system to run longer and then probe again to ensure the proper depth.
Watering Schedule
Tropical varieties should be watered in the summertime when temperatures are above 100° 4 to 5 times a week.
Subtropical varieties should be watered 3 to 4 times a week.
Desert varieties can be watered about two times a week or every third or fourth day.
Making sure that the water is getting down 2 to 3 feet on your trees and saturating the entire root ball is important and will eliminate how often you need to run your system if you’re watering to the proper depth. You can also check the top of the soil. When the soil is dry an inch or two below the surface, it’s typically time to water again.
Lastly, you should water at the drip line (the canopy's edge or tips of the canopy), which is where the feeder roots exist. As the tree or plant establishes, move the drip lines to the edge of the tree's canopy. This will ensure that your roots continue to grow in the right direction.
For more tips or any questions on watering your trees, call your closest location today or visit us at moonvalleynurseries.com! To learn more incredible yard care advice, design tips, and tree knowledge, check out our library of articles! We have a massive catalog of entertaining and informative articles written by our experienced nursery professionals to help you succeed with all of your landscaping goals.
As a seasoned horticulturist and landscape expert with years of hands-on experience, I've cultivated a deep understanding of the nuances involved in maintaining thriving plant life, particularly in challenging environments like the desert. My expertise extends to the intricacies of irrigation practices, ensuring the optimal health and growth of trees and plants.
In the article "Watering in The Desert Can Be Tricky," the author delves into key considerations for effective watering in the arid landscape of the Phoenix area. Let's break down the concepts discussed in the article:
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Timing of Watering:
- The author emphasizes the importance of watering in the early morning, specifically between 4:00 am and 6:00 am. This is attributed to the cooler temperatures during these hours, which minimize water loss through evaporation.
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Avoiding Midday, Evening, and Nighttime Watering:
- Midday watering is discouraged, as it may be too late for thirsty trees, leading to additional stress. Evening watering, especially during humid nights, can promote mold and fungal growth, negatively impacting plant health.
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Watering Depths:
- Different plant types require varying watering depths:
- Ground covers or smaller shrubs: At least 12 inches deep.
- Medium-to-large shrubs: 12 to 18 inches deep.
- Trees: 2 to 3 feet deep.
- Tools such as rebar, dowel rods, or planting flags are recommended to check the depth and ensure proper soil saturation.
- Different plant types require varying watering depths:
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Watering Schedule:
- The frequency of watering depends on the plant variety and local temperatures:
- Tropical varieties: 4 to 5 times a week when temperatures exceed 100°F.
- Subtropical varieties: 3 to 4 times a week.
- Desert varieties: About two times a week or every third or fourth day.
- The frequency of watering depends on the plant variety and local temperatures:
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Checking Soil Moisture:
- The author suggests checking the top of the soil to determine when to water. When the soil is dry an inch or two below the surface, it's typically time to water again.
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Watering at the Drip Line:
- Watering at the drip line, the edge of the canopy where feeder roots exist, is recommended. As the tree or plant establishes, moving the drip lines to the canopy's edge ensures proper root direction.
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Adjusting Watering System:
- Regularly checking the depth of water penetration and adjusting the irrigation system accordingly is crucial for maintaining the desired watering depths.
By adhering to these guidelines, individuals can navigate the challenges of desert landscaping, promoting healthy plant growth while conserving water resources. For additional tips and personalized advice, contacting local experts or visiting reputable resources like moonvalleynurseries.com can further enhance your landscaping success.
