As ice and snow treated with rock salt melts, the resulting runoff and airborne spray may injure vegetation – particularly evergreens. Here’s what to look for:
Damage from deicing salts is hard to prevent. Start by planting trees tolerant to salt (such as birch, oak, or juniper) near the road and driveway. Beyond that, monitor plants to ensure their overall health, keep trees well watered and use gypsum (calcium sulfate) to help counteract salt in the root system. Other preventative measures include diverting salt sources from trees by erecting barriers of burlap or wood; laying down mulch to prevent seepage; and watering during dry periods especially in spring when the ground thaws.