Drought / Underwatering
Utah is a very dry state. Trees that are not adapted to drought conditions will be stressed without supplemental irrigation during the growing season. Drought stress will manifest as leaf wilt, leaf folding or rolling, leaf scorch, leaf yellowing, premature leaf drop or leaf death, and overall tree decline. Some drought symptoms are similar to salt damage, as salt reduces the ability of a plant to take up water.
Properly identify the tree or plant species of concern and determine the particular water requirement needed. Typically, less frequent, deep watering within the root zone will provide better results. Frequent, shallow watering may not adequately penetrate the root zone, especially if competing turfgrass is present. For more information on watering trees and plants, see the Utah State University fact sheet Efficient Irrigation of Trees and Shrubs.