Methods of watering: Slower application rates are always recommended to prevent runoff. This can be accomplished by any of the following methods. 

• Use a slow drip out of an open ended hose or spray nozzle 
   
• Use a soaker hose 
   
• Use 5-gallon buckets or water bottles with a few ¼” holes drilled into the bottom. Fill these with water and place the over the roots of the tree.

Deep watering, well below the soil surface is recommended. Use mulch or small berms on slopes, heavy soils (clays), and compacted soils to assure water is soaking in and not running off onto paved surfaces. Do not let water pool up. Be sure to establish a personal reminder (i.e. tie a string around your finger) so that you do not forget that you are watering your tree. Don't forget to turn off your sprinkler or soaker hose.
 
Where do trees need water? Try to water the soil area that is directly beneath the foliage and shaded by the tree (under the drip-line).
                         
Young trees that have been in the ground less than two years have under-developed root systems, so concentrate water near the planting area.
 
Old, large trees can be extensively watered over the entire area under their foliage, but avoid the area three feet from the trunk. The three feet is an approximate radius from the trunk of a larger tree that should preferably stay dryer to avoid any potential fungul growth.  
 
Avoid Water Run Off- The ground may be hard, so you might need to modify your watering approach to allow water to soak in towards the roots. Water run off does not help your trees, wastes precious water resources and costs you money.

How else can trees be protected from drought?
Mulching trees with a three to four inch layer of hardwood mulch conserves water and decreases the amount of water that evaporates from the soil, aids in water and air penetration and cools the soil. Keep mulch six inches away from the trunk, because mulch mounded around the trunk can lead to trunk health issues
Regular maintenance that is designed to promote tree health and vigor ensures that their health and value will continue to provide benefits for decades to come. For more information about tree care visit:  www.cityofaustin.org/trees/.