Pre-Emergent Herbicides

If you know your lawn is prone to weeds in the spring and summer, pre-emergent weed control treatments will help stop weeds before they emerge. Pre-emergent herbicides form a barrier in the top inch or two of soil, preventing weeds from growing above the soil. This means less weeds to treat when the weather warms, keeping your lawn beautiful year round. 

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A professional pre-emergent and post-emergent herbicide that controls weed and grasses for 3 to 6 months.
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A professional selective pre-emergent herbicide that controls annual grasses, broad-leaf weeds, and sedges with a new active ingredient - dimethenamid-p (DMTA-P).
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A selective herbicide that delivers an excellent residual pre-emergent and post-emergent control of grass and broadleaf weeds.
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A selective, preemergence herbicide that controls nuisance weeds on ground covers, landscape ornamentals, established flowers, non-bearing fruit and nut trees, and non-bearing vineyards.
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A professional granular pre-emergent herbicide that controls broad-leaf and grassy weeds for commercial ornamental production and landscaping.
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A professional selective pre and postemergent herbicide that controls tough broad-leaf weeds with flexible application timing and residual weed control.
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A weed and feed in a shaker container that will fertilizer the plants and shrubs and a pre-emergent herbicide to prevent weeds for up to 3 months.
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A pre-emergent and post-emergent contact herbicide that controls selected grass and broadleaf weeds in non-crop areas and warm-season turfgrasses.
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A professional selective pre-emergent herbicide that controls annual grasses and broad-leaf weeds in field and container ornamental nurseries, Christmas tree and conifer farms.
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A non-selective pre & post-emergent herbicide concentrate that kills and prevents weeds for up to 12 months.
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A professional residual, soil active herbicide that works primarily by preventing cell division on golf courses, landscapes and others.
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Bio Advanced Season Long Weed Control for Lawns RTS is a post emergent and pre-emergent broadleaf weed killer.
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A professional selective pre and post-emergent herbicide that controls broad-leaf weeds in commercial cotton and soybean crops.
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A specially formulated herbicide that provides long-lasting weed control in corn, soybeans and a variety of other crops.
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Granular pre-emergent herbicide with low odor formula that delivers weed control and optimum plant tolerance on ornamentals.
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An herbicide, combined with a surfactant, that provides total vegetation control for up to 1 year.
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A highly effective herbicide that provides long-lasting protection against weeds by gradually killing it within a few days.
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A professional selective pre-emergent herbicide with residual control of many broad-leaf weeds in commercial sod farms, ornamentals and conifer nurseries.
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A specially formulated liquid emulsifiable concentrate herbicide which effectively controls and suppresses many annual grasses and some broadleaf weeds in soybeans, cotton, wheat, and many other field and vegetable crops.
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A professional selective pre & post-emergent dry herbicide that controls broad-leaf and grass weeds for commercial warm-season turf-grasses.
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A professional systemic selective pre and post-emergent herbicide for broad-leaf and grassy weeds with three different modes of action in corn fields and grain sorghum.
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A professional herbicide that controls broadleaf weeds by inhibiting its development and allowing the crop to overtake the weeds' growth.
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Provides pre and post-emergent control of annual and perennial broadleaf weeds and grasses on noncropland sites.
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A water-dispersible granular formula that provides pre-emergent control of broadleaf and grassy weeds in established turfgrasses, field-grown, container, and landscape ornamentals, nurseries, non-crop areas, and more.

Liquid Pre-emergents | Granular Pre-emergents | Wettable Powder Pre-emergents

Lawn Care Schedules & Maintenance Calendars

Cool Season Grasses | Warm Season Grasses

Pre-emergent herbicides are usually applied in the early growing season and help prevent target grass and broadleaf weed seeds from germinating as the weather begins to warm up in the Spring.  A pre-emergent herbicide, or weed preventer, will create a barrier around a seed, making it nearly impossible for the seed to sprout and the weed or grass to grow.

Pre-emergent weed control is typically applied twice a year, in the spring and in the fall, to help prevent weeds that germinate in the spring and fall. Learn more about Applying Spring Pre-Emergent Weed Control and Why You Should Be Using a Fall Pre-Emergent.

When applying pre-emergents, be careful to aerate first, and not after applying the products.  Aeration can break the seal over the ground and around the seeds which makes the pre-emergents less effective.  In some areas, you may need to do a split application of pre-emergent weed control – meaning you’ll apply your pre-emergents early (spring or fall), then aerate, then do a second application of pre-emergents to get season long control. 

Pre-emergent herbicides can be applied using a granular spreader or a pressurized handheld sprayer. Most liquid herbicides come as concentrated solutions that need to be mixed with water first (according to the label) before application.  Granular herbicides can be spread using a granular spreader and may require irrigation in order to help the granule release the pre-emergent chemical.


Be sure to check out our full Do My Own Lawn Care Video Series.

Spring Pre-Emergents Application Video | Fall Pre-emergents Application Video

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