If you have trees in the lawn there’s a good chance your trees may be receiving enough water. But look at the drip line of each tree. If it is outside of the lawn area making sure to water there, where the tree roots absorb the most water.
If you don’t have trees in the lawn and don't already have irrigation to your trees - water them!
Trees don’t necessarily show drought stress immediately but will respond over time by letting some of their outer branches fail, as well as being more vulnerable to problems like insects and tree diseases.
What are the best areas to apply water to trees?
- Drip line
- Near the trunk, but not saturating it
Here are two excellent articles from CSU Extension on maintaining healthy trees and tree roots, and fall and winter watering recommendations.
Healthy Roots and Trees
Fall and Winter Watering of Trees