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Jul 10

Supplemental watering for mature trees

Posted on July 10, 2018 at 1:16 PM by Riley Knight

Supplemental watering for mature trees

Watering your mature tree during extended dry periods is the best way to prevent unnecessary tree failure and avoid costly tree removals. Here is how you can set your tree up for success in three easy steps. First, place a layer of bark mulch 4"-6" deep that extends to the dripline of the tree. Note that the mulch should not be placed within 12" of the tree trunk to avoid root collar decaySecondwater 1-2 times per month depending on the frequency of hot day weatherLastly, if your tree is located near a lawn that you intend to convert to low water use landscape, plan ahead by adjusting the watering schedule over the course of 12-18 months if possible to allow the tree time to adapt

Keep in mind that trees in sandy soils will need more frequent watering versus trees in clay soil. If you have automatic irrigation, check for leaks 
regularly. Whether you hand water or use an automatic system, water is best applied at a slow speed to allow for soil to fully saturate and avoid runoff. You can get more information from Cal Fire on this topic.