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rmontcal

Rock salt for weeds

rmontcal
9 years ago

I bought a bag of the big rock salt crystals that you might use in a water softener. My idea was to prevent weeds in sidewalk cracks and elsewhere by strategically sprinkling the salt.

I know I have to be careful where I put this stuff, but how careful? Does anyone have any experience on what margin of death a sprinkling of salt will have? Said another way, what is the sideways reach of salt once it dissolves? For example, if I put some of these salt crystals in the crack between the lawn and the concrete sidewalk, how far into the lawn can I expect the grass to die back? 3-6 inches? More than a foot?

I'd appreciate any thoughts!

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