Plant performance can vary dramatically on sites affected by increased salt concentrations. Matching the salt tolerance of the species to the conditions at the site is an important consideration in the success of any new plantings. Salt tolerance is the ability of a plant to endure excess salts in the soil. Plantings in saline soils require the use of plant species that can survive the salt levels at the site. The Plant Materials program evaluates plants for survival and growth in saline sites. These evaluations provide the information necessary for selecting plants that will be productive on saline sites.