There are normally two sources of salt damage to landscape plants and lawns. The first comes from salt used on public roadways that may be scattered onto your lawn. The second may be a product you use on your driveway or walkway to break the bond between the ice and the surface for easier removal of ice.
Salt damage happens when leafage is spattered and is burned or when the root system absorbs the salt.
There are things you can do to help reduce salt damage, though. You can create a barrier using landscape fabric or burlap to assists in keeping salt out of your landscape bed or lawn. Covering landscape plants with the same material can assist with reducing the burning of leafage. You may also consider replacing parts of your lawn or landscape that is consistently damaged with brick, landscape pavers or decorative stones.