Solution:

It is a common fallacy that salting just kills weeds and has no effect on grass. Because of osmosis, when salt is added to a plant, water from the plant cells leaks out. Excessive water loss kills plant cells and, eventually, the entire plant. Salting weeds is a common practice among gardeners, but it comes with its own set of disadvantages. Plants that are useful can also be harmed by salt. To avoid harming beneficial plants, salt is dissolved in water and sprayed directly on weeds. As a result, using salt as a weedicide isn’t a foolproof way to get rid of weeds without harming beneficial plants.