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Pre-Emergent Herbicides

Pre-emergent Herbicides

Pre-emergent Herbicides are the best way to reduce and eliminate weeds in your lawn. Pre-emergent Herbicides work by preventing weed seed germination. They create a layer that kills the weeds as they try to push past the top layer of soil.

The key to using pre-emergent herbicides is proper timing.  There are two times of the year to apply your pre-emergent herbicides, the spring and the fall.   When to apply these during that time period depends on your geographic location, you can contact your local county extension for the best times to apply.   Most spring and summer weeds will germinate when the soil temperature at 4 inches down reaches about 52 to 55 degrees F for three or four consecutive days.

Some popular weeds that can be effectively controlled by pre-emergents include but are not limited to:

Spring Application

Early Spring Application:  Many of the pre-emergent herbicides have similar qualities and control the same broad and grassy weeds.  When applied at the correct time they are very effective and we recommend our top products such as these:

Other products include:

Late Spring Application:  If you are applying pre-emergent later in the season, the best option would be to use pre-emergents that have post emergent qualities to control the seeds that have already germinated and have already sprouted.  Our top products include:

Other products include:

Spring Application Chart

Pre-emergent herbicide spring application map

 *temperatures vary year to year so optimal application could vary from these dates

 

Fall Application

Early Fall Application:  When applying pre-emergents in late summer and early fall we would recommend using the same products as Late Spring Application.  This way you can control the already existing weeds and prevent any further growth. 

Mid to Late Fall Application:  When applying pre-emergents in this part of the year we would recommend using the same products as Early Spring Application.  

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  1. Oxadiazon SC

    Oxadiazon SC 2.5 Gal with Oxadiazon 34.4% can be compared to Ronstar FLO Herbicide with Oxadizon 34.1%. It has 3.17 pounds of oxadiazon per gallon in a suspension concentration formulation.

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  2. Spike 20P 5LB

    Spike 20P with tebuthiuron 20 % is a specialty herbicide to control tough woody plants (trees, shrubs, and vines) . It controls creosate bush, big sage, shinnery and other oaks. This long-lasting herbicide is ideal for sagebrush thinning and brush sculpting programs. It improves wildlife and grazing habitats. It is activated in the soil and becomes effective after enough rainfall has moved the active ingredient into the root zone.

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  3. Alligare Diuron 80DF

    Starting at: $35.95

    Alligare's Diuron 80DF is a dry flowable herbicide with 80.0 % Diuron as its active ingredient. It controls many annual and perennial grasses as well as herbaceous weeds. It is labeled for selective weeds in certain crops and non-selective weed control on non-cropland areas.

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  4. Specticle FLO -18 oz
    $279.95

    Specticle FLO with indaziflam, is a pre-emergent, selective and broad-spectrum herbicide that provides residual control of troublesome weeds such as crabgrass, annual sedge, poa annua and goosegrass. It also controls annual sedges and broadleaf weeds in turf, ornamentals (residential), hedgerows, hardscapes, Christmas trees, and conifers.

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  5. Southern Ag Atrazine

    Starting at: $14.95

    Southern Ag Atrazine with 4.0% atrazine controls many broadleaf weeds (emerged and from seeds) in St. Augustine and Centipede grass. It controls Florida Betony, Spurweed, Annual Bluegrass and many other problematic weeds. It also suppresses crabgrass. Learn More
  6. Biathlon Herbicide

    Biathlon Herbicide jis a pre-emergent granular herbicide that combines both oxfluorfen and prodiamine to control a broad spectrum of weed control with good plant tolerance on ornamentals. Biathlon is formulated on Verge granulars that reduce the dust levels during application, resulting in increased worker safety and ease of application. It is labeled for use on production conifers, grounds maintenance, conifers and Christmas trees, and other listed non-crop areas.

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  7. Southern Broadleaf Lawn Kit
    $106.95

    This complete lawn starter kit will cover pre-emergent, post-emergent, and spot applications for a year long package for warm-season turf. It also includes Herbicide Helper to improve the wetting of the foliage.

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  8. Esplanade 200 SC

    Esplanade 200 SC is a pre-emergent herbicide with Indaziflam 19.05%. It has a low use rate and long residual (up to 8 months) on more than 75 weed species. It has a superior broad-spectrum control for more than 75 types of weeds. Esplanade 200 SC by Bayer was developed for the Vegetation Management Market finding uses on non-residential sites such as industrial sites, roadsides, utility rights of way, and railroads. Esplanade 200 SC may be used as a bare ground herbicide.

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  9. Hi-Yield Crabgrass Control

    Starting at: $20.20

    Hi-Yield Crabgrass Control with Benefin 1.33% and Trifluralin 0.67% is a selective pre-emergent herbicide to prevent crabgrass, goosegrasses, barnyard grass, foxtails, and barnyardgrass from emerging. Hi-Yield Crabgrass Control controls these annual weeds as they germinate and last 6-8 weeks. To be successful, apply Hi-Yield Crabgrass Control approximately 1 to 2 weeks before the germination of annual grass weeds. For spring grasses, this is typically late February to early March (depends on your location). Learn More

  10. SureGuard SC Herbicide

    Starting at: $195.00

    SureGuard SC Herbicide is a long lasting residual pre-emergent herbicide to kill hard-to-control grass and broadleaf weeds. As a pre-emergent, it has long residual. It is fast and effective, even on glyphosate-resistant weeds when tank mixed with glyphosate.

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