WHAT HAPPENS IN A DROUGHT?
A water deficit develops in the tree. Non-woody feeder roots and root hairs are particularly sensitive to drying and are affected first. They shrivel and become non-functional. They lose the ability to absorb water. The roots can no longer provide sufficient water to the top of the tree. The tree is forced to draw upon stored resources for survival. Additionally, many metabolic changes occur which substantially alter the physiology of drought-stressed trees. STRATEGIES FOR CONTROL Water during periods of low moisture. Select appropriate site and follow good planting practices. Where possible, select native plants and match plants to site conditions. Mulch properly to retain soil moisture. Prune dead and weakened tissues to avoid secondary problems. DO NOT PRUNE healthy, living tissue from mature trees during drought periods. Maintain tree vigor through good cultural practices. WATERING Trees need approximately one inch of water per week. Water is best applied at one time as a slow, dee
