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 selective pre-emergent herbicide for broad-leaf and annual grass weed control in nurseries, turf, and landscape plantings.
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A professional selective pre-emergent herbicide that provides season-long weed control for broad-leaf weeds and grasses in orchards and nurseries.
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A commercial pre-emergent herbicide for cool and warm season turf plus field and container grown ornamentals that controls broad-leaf weeds and grasses.
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A professional selective pre-emergent herbicide that controls broad-leaf weeds and annual grasses than any other pre-emergent herbicide.
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Pre-emergent herbicide for effective control of annual grasses and broadleaf weeds in established home lawns.
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A professional water-soluble herbicide for early post-emergent control of crabgrass and pre-emergent for grassy and broad-leaf weeds in lawns, golf courses, field-grown nurseries, landscape ornamentals.
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A professional selective pre-emergent herbicide for annual grasses and broad-leaf weeds that will last all season with one application.
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A professional selective pre-emergent and post-emergent herbicide that controls crabgrass and annual grasses plus broad-leaf weeds in cool & warm-season grass.
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A professional selective pre-emergent herbicide that controls broad-leaf weeds in cool & warm-season turf for residential lawns and golf courses.
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A professional dual mode action selective pre-emergent and post-emergent control of crabgrass, broad-leaf, annual grass, sedges in cool & warm-season grasses.
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Provides pre-emergence and early post-emergence control of crabgrass and broadleaf weeds and annual grasses on established lawns and ornamental turfs in cool season and warm-season grasses while feeding essential nutrients for healthier turf.
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A professional selective pre-emergent and post-emergent herbicide that controls herbaceous weeds and annual and perennial grasses.
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A professional pre-emergent herbicide that controls broad-leaf weeds in established areas for commercial turf-grass and ornamentals.
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A professional selective pre-emergent granular herbicide that controls 100 different broad-leaf weeds and grasses for nurseries, tree plantations and landscapes.
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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 dry-flowable granule formula that effectively controls and suppresses brush and broad-leaf weeds in pastures, rangeland, grass hay fields or CRP.

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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