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Top Questions About Weed Control

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Questions About Weed Control

  • Answered by
    MichiganDot on
    September 20, 2017
    A.

    Most of these products move through the soil with rain or watering or are inactivated by soil components but an important distinction is whether the company used immediate release or slow-release chemicals. In general, immediate/quick-release herbicides like Round-up are gone within 2 wks. Other herbicides persist for 30-60 days. You need to contact the company to learn the specifics of what was applied. Once you have this information, go to this website: https://extension.psu.edu/persistence-of-herbicides-in-soil. Also, the company should be falling over backward to give you legitimate references to answer your questions.

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  • Answered by
    Downtoearthdigs on
    September 26, 2017
    A.

    the only option I could find that has a high probability of working is to first kill the affected patches of your lawn (including about 6 inches around the obviously affected patches) with a non-selective herbicide such as glyphosate (Roundup). The effective time for treatment is when the grass is green and actively growing in spring or fall, not when it’s brown and dormant in mid-summer. Once the grass in the treated area is dead, rake it out and reseed the spot. However, since the seeds can survive a year, you will need to also treat your lawn with a pre-emergent product in the fall and the following year. A non-toxic choice includes products composed of corn gluten.

    It may be possible to control without killing off your entire lawn.
    This link has more information.

    http://plantscience.psu.edu/research/centers/turf/research/annual-reports/2008/kaminski6.pdf

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  • Answered by
    DLarum on
    September 30, 2017
    Certified Expert
    A.

    I believe what you are dealing with is a liverwort. It is a non-vascular plant like moss. They like areas that are very moist, damp and humid. They also like areas where fertilizer is regularly applied, esp nitrogen run off from lawns. We have is around our plant berms at the garden center where I work, it thrives on the run off from our irrigation system and plant fertilizers. This article from the Oregon State University may help you
    https://oregonstate.edu/dept/nursery-weeds/weedspeciespage/liverwort/liverwort_control.html

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  • Answered by
    BushDoctor on
    October 4, 2017
    Certified Expert
    A.

    You can use vinegar, which is a less toxic alternative to weed control. Here is an article with more information: https://www.gardeningknowhow.com/garden-how-to/info/use-vinegar-in-gardens.htm

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  • Answered by
    MichiganDot on
    October 17, 2017
    A.

    Typical weed and feed products will prevent current perennial weeds from coming back next year. However, a pre-emergent must be applied in spring. Many annual lawn weeds toss their seeds into the air in spring. Using a pre-emergent will prevent those seeds, and other seeds in your soil from germinating. It will be washed out and worthless by spring if you cast it now.

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  • Answered by
    BushDoctor on
    October 22, 2017
    Certified Expert
    A.

    I like to solarize my soil in large black containers. This will heat the soil up and kill off anything that could be growing in it. The sun will heat these containers naturally, and help you maintain clean soil.

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  • Answered by
    BushDoctor on
    October 24, 2017
    Certified Expert
    A.

    Sometimes weeds are deep rooted and hard to kill. For these, you can try spraying undiluted vinegar directly on the tops of the weeds. This will kill them off. You will have to do this repeatedly until they are dead, and on others that try to appear.

    Just be careful not to get any on the plants that you are purposely growing. Here is an article for more information: https://www.gardeningknowhow.com/special/organic/homemade-pet-friendly-weed-killer.htm

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