Q: Three years ago I bought a bonita ash tree because of its size, beauty, easy maintenance, and short period of leaf dropping.Β So impressed over the past year I was instrumental in the planting of four more in our little community. Once established how often do you feel they need to be watered?
A:Β The recommended water schedule for ash trees is once every seven to 10 days during the summer to a depth of 24 to 36 inches. In the spring and fall you can back it off to once every 10 to 21 days and in the winter every 14 to 21 days.
Also, I assume you are using drip irrigation arranged in a circular fashion around the drip line of the tree. When they are young you can get away with a hose at the base of the tree, but not once the absorbing roots extend farther out.
Peter L. Warren is the urban horticulture agent for the Pima County Cooperative Extension and the University of Arizona. Questions may be emailed to tucsongardensage@gmail.com
