Anyone topdress their soils with sand for bugs?

Discussion in 'Bugs' started by Colo MMJ, Nov 25, 2017.

    Colo MMJ

    Colo MMJ Well-Known Member

    The grow weed cheaply guy suggests it to kills any soil bugs. You would probably have to drip to avoid washing it away. If so, what kind of sand? I know you can sand at Lowes and Hiome Depot for kids sand boxes. Supposedly cuts up bugs with silica and cheaper than diatem earth.

    frizfrazjaz Well-Known Member

    I didn’t have much luck with it. I used sand box sand. Drip system works just ok, and siphon watering just seems to breed more gnats and such. I think diatomaceous earth would be worth it.
    Colo MMJ likes this.

    ruwtz Well-Known Member

    I was using Gnatnix as a top dress to knock back fungus gnats. Works but I was getting through it so fast and a big fuss trying to sift it from the medium in between transplanting and at chop. I just went back to a layer of perlite on top, works great.
    frizfrazjaz likes this.

    SPLFreak808 Well-Known Member

    I've used both sand & food grade de, they both work but have pros & cons.

    -hard to see soil moisture
    -hard to weigh soil moisture
    -certain insects can still burrow in sand.

    -only last 1-2 waterings
    -nothing will crawl through it
    MarWan, Colo MMJ and frizfrazjaz like this.

    SensiPuff Well-Known Member

    Man Idk how much sand costs but nematodes are like 30 bucks shipped and will destroy the lifecycle of anyrhing that lays larvae in the soil
    Colo MMJ likes this.
    Tom Tucker 313

    Tom Tucker 313 Active Member

    Baking soda topdress. It will dry them gnats out.

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