Any problems mixing Salt with Roundup for weed killing?

Discussion in 'Lawn Care/Landscaping' started by tracyballard, Apr 30, 2019.

  1. tracyballard

    tracyballard New Member

    Feb 3, 2015
    Trying to permanently kill weeds and anything else growing in certain areas of my alley and sidewalks. Would it cause any toxic hazards if I mix salt and roundup to apply all at once? thanks in advance
  2. Reach4

    Reach4 Well-Known Member

    Sep 25, 2013
    Not a toxic hazard, but Roundup is for short term killing. You can use roundup (without salt) and plant few days later.

    For longer term crack etc killing, you would be better to use vegetation killer designed for that.
    Last edited: Apr 30, 2019
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  4. WorthFlorida

    WorthFlorida Broad-Wing Hawk

    Oct 28, 2009
    Orlando, Florida
    Regular Roundup takes two weeks for a full kill, root and all. No reason to add salt, however using salt alone will kill everything but a longer while for the salt to leach out of the soil. Roundup does not kill seeds. Roundup comes in all kinds of Glyphosate concentrate. The higher the concentrate percentage, the higher cost. Glyphosate is now available in generic formulas. Most herbicides of other brands will be glyphosate and at any level of concentrate.

    Roundup Quick Pro: It's the Diquat that make it a 24 hour kill
    *Glyphosate, N-(phosphonomethyl)glycine, in the form of its ammonium salt.......... 73.3% .
    Diquat dibromide [6,7-dihydrodipyrido (1,2-a:2’,1’-c) pyrazinediium dibromide] ...... 2.9%
    OTHER INGREDIENTS: ............................................................................................... 23.8%
  5. Terry

    Terry Administrator Staff Member

    Aug 17, 2004
    Bothell, Washington
    The only two members of my family that liked using Roundup are now dead. The rest of us are okay though.
  6. Matthew K Jackson

    Matthew K Jackson New Member

    May 11, 2019
    New York
    Roundup can cause more damage. You will require additional efforts to grow grass. I think you should go for conventional methods of weeds and shrubs removal. You can either pull out weed or use weed-killers. If the lawn is packed with weeds, you can seek for a professional help.
    Last edited: May 22, 2019 at 11:34 PM

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