06/23/2026
Treasure Valley summers are reliably hot and dry, and the combination puts real stress on trees across Nampa, Caldwell, Meridian, Eagle, and Boise — particularly those planted within the last decade that haven't yet developed deep, established root systems.
The most common signs of summer drought stress include leaf scorch (brown, crispy leaf edges while the center stays green), wilting or drooping foliage that doesn't recover overnight, premature leaf drop in midsummer, and increasing dead branches in the upper canopy. One important detail: trees often show these symptoms several weeks after the actual dry period that caused the damage, so midsummer distress can trace back to a dry stretch in late spring.
Consistent deep watering directed at the root zone, not at the base of the trunk, is the most effective homeowner response to early drought stress. For trees already showing significant symptoms, or for larger, more mature trees where the stakes are higher, a professional assessment helps determine whether additional intervention is needed and whether the tree's root zone and overall structure are sound.
ArborSafe serves Ada and Canyon Counties and surrounding communities with free consultations and honest, arborist-level assessment of what your trees actually need this season.