Most of us don't think about watering our trees right now. It's November, most of the leaves have dropped and the trees look as if they've gone dormant, but the fact is there's still a lot of activity going on underground. Tree roots continue to grow throughout the late fall and winter and because of this, they need moisture to survive. Usually we've had some natural moisture by this time of the year, but it continues to be dry so it's important to water your trees now and throughout the fall and winter months, especially if the weather remains dry and windy. Trees should be watered slowly. Slow watering helps ensure the water will penetrate the ground and not run off. A good rule of thumb to remember is your tree needs about 10 gallons of water per inch of trunk diameter. Measure the tree trunk's diameter about knee high. In this case, the trunk diameter is 3". Based on 10 gallons of water per inch of trunk diameter, this tree needs 30 gallons of water, each time you water. There are several methods you can use to water your trees. Assuming your sprinkler system is shut off by now, you can use a hand sprinkler, a simple lawn sprinkler, a soil needle or even a 5 gallon bucket with holes drilled in the bottom. Regardless of how you water, the best place to water is around the drip line of the tree. The drip line is the point on the ground where water will drip off the widest-reaching branches. this until you've worked around the drip line. It is especially important to water trees that are root-limited because they were planted between the sidewalk and the street.