Winter can be harsh. Snow, ice, sleet, freezing rain. Many people in cold climes have concrete or stone walkways carved into their lawns. To keep these frozen avenues of egress open, people may put salt on them. While salt will melt ice, it also will damage the lawn when the ice dissolves and leaches into the soil.
When spring comes, brown patches of dead grass might appear where the salt has settled. In many cases, spring snow melt and rain often will flush the lawn of accumulated salts. Within six to eight weeks, your grass may green up again. If it's a dry spring, experts recommend watering the damaged area three or four times [source: Throssell].