That's a LOT of salt!
The good thing about salt is that it persists in the soil, and doesn't move much.
The bad thing about salt is that it persists in the soil , and doesn't move much.
So it's really good for cracks in the sidewalk, driveway or patio, and probably inconsequential where you spot-apply and use sparingly, and still want other plants to grow. Such a tiny amount would be is used.
It's all a matter of degree. You may not see any physical damage, but it could build up.
Caveat utilitor (User beware).
One would NEVER use this recipe to kill weeds in an entire area to be planted later. Just because something is natural, doesn't mean it is harmless!
With the vinegar in the recipe, I'll bet one can get away with using less salt? Where did this recipe come from? Jerry Baker?
