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Planted landscape trees benefit when they develop a broad shallow root system (upper left, from: University of Minnesota). A six-inch diameter ash tree with two emitters (middle left). A newly planted and staked birch tree with two emitters at the base (lower left). An established Texas red oak that receives drip irrigation and has a basin that collects surface flow (right). (Jeff Schalau, University of Arizona/Courtesy)

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Northern Arizona’s 2020 monsoon season has been largely disappointing thus far. In addition, La Nina conditions are forecast in the western equatorial Pacific Ocean which usually translates into lower-than-average winter precipitation for northern Arizona.

By Jeff Schalau, Courier Columnist August 20, 2020