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Calcium Chloride as weed killer?

A

AndrewFromNS

Member
Afternoon,

I know that Calcium Chloride is potentially fatal to grass, should you happen to be unlucky enough to spill it. I was wondering, though, if one could use left over Calcium Chloride (say, stuff removed from tires if the ballast wasn't needed) in a controlled manner to kill weeds on a driveway, walkway, or other right of way? I volunteer at a live-steam railway local to me, and we use RoundUp (or some other such similar product) a couple times a year to make sure the weeds don't overpower our rail line. I was wondering if one could spray the Calcium Chloride mixture on the line in much the same way one sprays the RoundUp? Would there be any washout effects? Residue? Other potential issues i'm overlooking?

Thanks!
Cheers,
AR
 
It's just a salt; are the roads 'salted' in Winter in N.S.? Effect will be the same as the runoff/residue from 'salted' roadways. Some of the early Johnson grass chemicals were salt-based.
 
Calcium Chloride would act just like the salt you use to melt ice. Only kill when very heavy and would run off very bad. Mess up the soil. Much better to use roundup. When roundup is used, it has no long term problems.
 
I spilled some in my yard one time and the grass stayed dead a couple of years. I think it might work as you suggest.
 
Calcium chloride causes severe rusting of iron and steel. Are you sure you want it on your live steam railroad tracks ?
 
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