Waynes Can Help! For sure, the application of a pre-emergent can be tricky. But the lawn care experts at Waynes have a trick or two up their sleeve. Our Service ...Liquid pre-emergents come in ready-to-use or concentrated forms. If the liquid is in concentrated form, it requires mixing with water, and a sprayer is used for application. Ready-to-use pre-emergents don’t need mixing and typically come in a spray bottle or sprayer. Tools needed: For concentrated formulas: 1 weed sprayer Spring pre-emergent herbicide applications are used to prevent summer annual weeds. Summer annual weeds are both grassy and broad leaf types. For best results apply herbicides when the soil temperature is around 55 degrees or above for at least 36 to 72 hours (ideally this will be two weeks before seed germination). Targeting them early in the season with a pre-emergent herbicide prevents many weed types from growing. For best results, apply Prodiamine up to two times during the spring when soil temperatures cross 50°F to 55°F and 65°F to 70°F. After the initial application of Prodiamine, I recommend employing a second pre-emergent application of ...The timing of pre-emergent applications depends on the weather, but it should be before crabgrass emergence in the spring. Summer weeds tend to be worse than spring, so a second application may be helpful later in the season. As always, read the label thoroughly before applying and ask your sales representative any questions. A pre-emergence spray of herbicide being added onto a field of oilseed rape. Preemergent herbicides are a form of chemical weed control which prevent germinated weed seedlings from becoming established. In some areas of the world, they are used to prevent crabgrass from appearing in lawns. [1] Preemergent herbicides are applied to lawns in the ... Feb 28, 2014 ... Since we rarely have a winter in Southern California and Arizona February is the month to apply your pre-emergent herbicide to control summer ...Feb 22, 2024 · Herbicides come in two major varieties — pre-emergent and post-emergent. Pre-emergent herbicides act as a preventative measure, keeping weed seeds from germinating (check out our guide to the 8 Best Pre-Emergent Herbicides). Post-emergent herbicides kill weeds that have already sprouted. Your best defense against weeds in your yard is to ... In times of crisis, effective communication is crucial. Whether it’s a natural disaster, a security threat, or a medical emergency, being able to quickly and efficiently notify the...Active ingredient: Prodiamine. Group code: 3. Cavalcade® 4L provides long residual, pre-emergent control of 30 grassy and broadleaf weeds, including crabgrass, Poa annua, goosegrass, prostrate spurge, common purslane and knotweed. This liquid formulation of Cavalcade can be applied in the fall for weed prevention and the following spring.Dec 12, 2023 · Pre-emergent herbicides keep weeds and undesirable grasses like crabgrass from invading your turf. When you apply a pre-emergent, it is absorbed by germinating seedlings in the soil and prevents cell division, which results in their death before emergence. There are two main pre-emergent herbicides: dithiopyr (also known as Dimension 2EW ... The pre-emergent only remains active in the soil for a limited time. This varies with the type of pre-emergent. But usually, its effectiveness will end within 2-4 months as it breaks down. Using A Pre-emergent Correctly. Using a granular pre-emergent is less likely than a liquid pre-emergent to cause damage to the plants in your flower beds.Feb 17, 2022 · Pre-emergent herbicides are designed to kill weeds before they have a chance to grow, post-emergent herbicides require application when the weeds are fully grown. Pre-emergent and post-emergent herbicides are chemically designed to either prevent weeds or to kill them if they already exist. Learn how they work and how to apply them, in the ... Mar 1, 2021 · Pre-Emergent Weed Control When Overseeding; If you plan to overseed your lawn at a time of year when you would normally put down pre-emergent, I recommend using this product,* followed 5 weeks later with one of the pre-emergent products listed on this page. This will allow your grass seed to germinate, but blocks crabgrass for up to 6 weeks ... Yes, but remember pre-emergents stop seeds from germinating. If you are planning to plant flower seeds or have wildflowers or flower bulbs in the beds do not ...The best time to put down pre emergent products on your lawn is when the lawn’s soil is somewhere between 50°F and 60°F, and dry. It also helps if there is a bit of rain in the forecast, if not, you need to follow up with a garden hose or sprinkler system. The bottom line is that the pre emergent must soak deep enough into the lawn to ...Dimension Ultra 40WP is a herbicide that will control pre- and post-emergent crabgrass in turf, sod farms, lawns, industrial sites, other non-croplands, and ornamentals. With the exception of crabgrass Dimension Ultra 40WP will not control other broadleaf weeds and annual grasses that have already emerged. Apply Dimension Ultra 40WP before ...In today’s world, where weather patterns are becoming increasingly unpredictable, it is crucial to stay informed and prepared for any potential emergencies. One of the most effecti...Barricade® is The Andersons professional-grade pre-emergent weed control. Containing 0.48% of the active ingredient prodiamine, Barricade® is one of the best granular weed preventers on the market. It can be used on established lawns and landscape beds to prevent over 30 grass and broadleaf weeds like crabgrass, goosegrass, foxtail, …Barricade is a pre-emergent weed control, which means that is designed to prevent weeds. Application timing is critical to the product's performance. To prevent summer annual weeds in both northern and southern turf types, apply Barricade in early spring prior to soil temperatures reaching 55 degrees Fahrenheit at a four inch depth. …Nov 26, 2023 · Pre emergent herbicides provide long-lasting protection, minimizing the need for frequent reapplication. In summary, the benefits of using pre emergent herbicides for your lawn are manifold. They effectively prevent weed growth, reduce weed competition, promote improved , and save you both time and money. Among the many pre-emergent products out there and the chemicals they consist of, three types stand out as safer than the rest: This pre-emergent chemical is the main ingredient in Gallery brand products. It works well against a broad array of weeds. This chemical is the primary ingredient in the Ronstar pre-emergent product line.Apply your first round of crabgrass preventer (also called pre-emergent herbicide) in the early spring before the soil temperature reaches 55 degrees Fahrenheit (12 Celcius) to control crabgrass, henbit, chickweed, poa annua, and other common lawn weeds. For best results, apply a second application of pre-emergent in the early …Sulfentrazone 4F Weed Killer, Pre-Emergent and Post-Emergent, Broad-Spectrum Control, Stops 100+ Weeds, Pet Safe, 3-Pack of Disposable Gloves Included, 8 Ounces. $48.95 $ 48. 95. FREE delivery Feb 22 - 27 . Bonide (BND60400) - Crabgrass and Weed Preventer, Dura Turf Crab-Grass Pre-Emergent Control for Lawn and Ornamental Garden Beds …Stomp ® Xtra Herbicide is a selective pre-emergent herbicide for the control of most annual grasses and certain broadleaf weeds. Stomp Xtra controls weeds by inhibiting seedling development; it will not control established weeds. For best results, seedbeds should be free of weeds, trash and clods at the time of application.Snapshot DG herbicide is a selective pre-emergence herbicide for control of certain broadleaf weeds and annual grasses in container and field-grown ornamentals, landscape ornamentals, and a variety of other areas. It is effective on more than 120 broadleaf and grassy weeds. It can be used over the top of more than 600 labeled …Pre-emergents, rather than interfering with the growth process, aid in the prevention of germination, which is the process by which weeds develop and sprout from the soil. Pre-emergents should be applied to the entire turf area to ensure no weeds arise in previously untreated areas. It’s also vital to water pre-emergent herbicides to boost ...Mar 20, 2021 ... What are Pre-Emergent Herbicides? Pre-emergence weed killers are used before you see the weeds to prevent them from showing up in the garden or ...Pre-emergent herbicide is a type of weed killer that works by preventing seed germination. That means you have to apply it before weeds appear. Best Customer Service. 4.9/5. Treat My Lawn. Call 877-386-6512. 50% off for Today’s Homeowner readers*. Best DIY Lawn Service. 4.1/5.Most other post emergents on the market are going to need at least a several week window just like your pre emergent window of four to six weeks. After that turf has come up and everything's been established and mowed. The only time that you're going to have an exception to that is if the product label says so.The best pre-emergent for Bermuda grass is The Andersons DG Pro Turf Barricade. This highly effective pre-emergent herbicide is safe to use on Bermuda grass. And has an excellent reputation with customers for control of summer and winter annual weeds. The top choices at a glance: Prodiamine 65 WDG - Pre-Emergent Herbicide (generic Barricade) is a pre-emergent weed control designed to stop weeds in the lawn, such as crabgrass, annual bluegrass (poa annua), bittercress, chickweed, and henbit. This is a dry product you mix in water to make a liquid to apply via backpack/battery sprayer. One 5 oz bottle covers 6,000 sq ft ... Yes, but remember pre-emergents stop seeds from germinating. If you are planning to plant flower seeds or have wildflowers or flower bulbs in the beds do not ... Prevents grassy and broadleaf weeds, including crabgrass, poa annua, goosegrass, henbit, and more. Contains 0.48% of the active ingredient prodiamine. Made in the USA. Barricade is available in pallet quantities - For 18 lb. Barricade there are 77 bags per pallet - For 40 lb Barricade there are 35 bags per pallet. The earliest known use of the adjective pre-emergent is in the 1940s. OED's earliest evidence for pre-emergent is from 1942, in Ecological Monography. pre-emergent is formed within English, by derivation. Etymons: pre …Fortunately, there are many products formulated to battle this difficult weed; most will kill many other common lawn weeds as well. There are two broad categories of crabgrass killers: pre-emergent and post-emergent. Pre-emergent crabgrass killers prevent the seeds from sprouting. When applied early enough in the spring, you can …Snapshot DG herbicide is a selective pre-emergence herbicide for control of certain broadleaf weeds and annual grasses in container and field-grown ornamentals, landscape ornamentals, and a variety of other areas. It is effective on more than 120 broadleaf and grassy weeds. It can be used over the top of more than 600 labeled …Southern Ag Amine 2-4 Pre-Emergent Herbicide features formulation with 2, 4-D acid, suitable for killing a wide range of broadleaf weeds and invasive grasses. Southern Ag Amine 2,4-D WEED KILLER, 32oz - Quart. Low, economical use rate of 1 to 4 pints per acre. Controls many broadleaf weeds & woody plants.In times of crisis or unforeseen circumstances, having access to emergency hotel vouchers can be a lifeline for individuals and families who find themselves without a place to stay... Practical tips for using preemergence herbicides correctly in the home landscape, including how preemergence herbicides work and risks to consider when making a preemergence herbicide application. A list of common preemergence products is included. Benefits of Using Pre-Emergent · Using a pre-emergent herbicide is the most effective way to control weeds · Poses no danger to desirable plants · Use of pre-&...Feb 12, 2024 · Apply When Soil Reaches 55º Fahrenheit. The best time to apply pre-emergent herbicides is when the soil temperature reaches 55°F, which varies substantially by location. If you live in USDA growing zones 1 through 5, your soil won’t reach the right temperature until late spring or early summer. Prodiamine 65 WDG - Pre-Emergent Herbicide (generic Barricade) is a pre-emergent weed control designed to stop weeds in the lawn, such as crabgrass, annual bluegrass (poa annua), bittercress, chickweed, and henbit. This is a dry product you mix in water to make a liquid to apply via backpack/battery sprayer. One 5 oz bottle covers 6,000 sq ft ...LEBANON 0.58 Prodiamine Crabgrass Preventer is a pre-emergent weed control product used in the professional care of turf and maintenance of trees, shrubs, and flowers. Includes 0.58% Prodiamine for pre-emergent grassy weed control and crabgrass prevention. Product is featured in granular form on a BIODAC Carrier. Post-emergent herbicides are products used to control weeds and other non-desirable vegetation that have grown above ground. If you were too late to apply a pre-emergent herbicide treatment, missed a spot in your yard, or it's been a while since you have treated your property for weeds, post-emergent herbicides, also known as weed killers, can help kill ugly and nuisance weeds (and weeds not ... Pre-emergent herbicides stop the seeds of unwanted plants from sprouting in the first place. Learn when to use them in the spring and fall, and how to apply them correctly for lawns, vegetable gardens, and …Pre-Emergent Herbicides for Edible Gardens & Plants. Correct application of pre-emergent weed killers on your edible garden is key for successful weed control. Timing is crucial, because the product must be present in the soil before weeds germinate, so they can be controlled instantly. Applying too early, and you risk the product not being ...Avoid using any fertilizers that contain pre-emergents, also known as crabgrass preventers. These products will harm your grass seed. Do not apply pre-emergent to a lawn that was seeded in the last 3–4 months. Do not apply pre-emergent if you plan to seed your lawn in the next 3 months. “Crabgrass preventer” products are pre …Pre-emergent weed killer will almost certainly kill newly re-seeded St. Augustine or freshly laid sod so only apply to established lawns. This is because most selective herbicides are designed to block seeds from growing and new root systems may be too weak to tolerate them, resulting in potentially fatal damage. ...Treflan was the pre-emergent broadleaf weed killer we used years ago. It worked for weeds that grew from seeds. I don't know how well it would ...Jan 19, 2018 · LESCO. Timing is everything, especially when it comes to the application of pre-emergent herbicides like LESCO's Stonewall to control summer annual weeds. The general guide is to get the application down before the top 2" of soil are 50-55 degrees Fahrenheit for five or more consecutive days. This factor is very important because 20% of the ... Prevents grassy and broadleaf weeds, including crabgrass, poa annua, goosegrass, henbit, and more. Contains 0.48% of the active ingredient prodiamine. Made in the USA. Barricade is available in pallet quantities - For 18 lb. Barricade there are 77 bags per pallet - For 40 lb Barricade there are 35 bags per pallet. Snapshot 2.5 TG Granular Pre-Emergent. Snapshot 2.5 boasts more control than any other pre-emergent herbicide on... Up to 6-8 months of control for 111 broadleaf and grassy weeds. Application rate: 2.3 to 4.6 lb per 1000 square feet. Material must be applied before rainfall or irrigation.Pre-emergent fertilizer combines pre-emergent herbicide with fertilizer in one easy-to-apply product. When you use it correctly, the pre-emergent herbicide prevents weed seeds from developing after germination. The herbicide forms a protective barrier in the soil that inhibits root and shoot growth from the newly germinated seed. At the same ...Pre-emergent herbicides work extremely well if you if you get your application timing right. Pre-emergent herbicides work by forming a layer in the soil that a germinating weed has to grow through. The pre-emergent barrier then interrupts the growth process in some way to prevent the seed from getting all the way through the seed germination stage.In today’s unpredictable world, being prepared for any emergency is more important than ever. Whether it’s a natural disaster, power outage, or civil unrest, having the right prepp...Howard Johnsons Dimension 0.27G Herbicide is a granular pre-emergent herbicide used for season-long control or suppression of listed annual grasses and broadleaf weeds including poa annua, bittercress, carpetweed, chickweed, crabgrass, oxalis, and spurge (see label for complete list). Containing the active ingredient Dithiopyr, this weed preventer is …To stop summer annual weeds, apply pre-emergent to your Oklahoma yard in early spring, between February 1 and March 15, once soil temperatures rise to 55℉. To halt winter annual weeds, plan your pre-emergent herbicide application between August 15 and September 15, when soil temperatures fall to 70℉. These two applications will stop …Apply your first round of crabgrass preventer (also called pre-emergent herbicide) in the early spring before the soil temperature reaches 55 degrees Fahrenheit (12 Celcius) to control crabgrass, henbit, chickweed, poa annua, and other common lawn weeds. For best results, apply a second application of pre-emergent in the early … It is used to prevent the germination and growth of grassy and broadleaf weeds in turf and gardens. Prodiamine 65 WDG - Prodiamine 65WDG is a granulated pre-emergent herbicide. The granules are added to water to create a liquid herbicidal solution. It can be applied to established turfgrass and landscaped areas to control a variety of grass and ... Answer: the first time to apply pre-emergent in North Texas is January 27th - February 20th (or a little later during really cold winters). This pre emergent weed control application is primarily made to stop crabgrass, goosegrass, dalisgrass, and most other broadleaf weeds in the early summer months. Important note: this is not a situation of ...Preemergence herbicides are the foundation of herbicide-based weed management systems, and effective use of these products is essential to protect crop yields and reduce selection pressure for herbicide resistant weeds. In a perfect world, applying preemergence herbicides immediately after planting would provide the greatest likelihood …Yard Mastery 0-0-7 Prodiamine is a granular pre-emergent designed to stop weeds in the lawn, such as crabgrass, poa annua, bittercress, chickweed, and henbit. One 45 lb bag covers 15,000 sq ft at the rate of 3 …Pre-emergent herbicides keep weeds and undesirable grasses like crabgrass from invading your turf. When you apply a pre-emergent, it is absorbed by germinating seedlings in the soil and prevents cell division, which results in their death before emergence. There are two main pre-emergent herbicides: dithiopyr (also known …Pre-emergents can also be used to help prevent seasonal winter weeds, including Winter Grass. Seasonal winter weeds will start to germinate once the average soil temperatures start to drop below approximately 14 degrees. Therefore, it is best to get your application on just before this is set to occur. The exact time this will occur will depend ...Key messages. Several new pre-emergent herbicides for the control of annual ryegrass are being introduced for use in broadacre cropping. Each of the new molecules will have their own advantages and disadvantages. This review outlines what we need to know about the physical chemistry of pre-emergent herbicides to get the best …Snapshot 2.5 TG prevents a wide variety of weeds and can be used on all landscape types. It’s for spring and fall use. Snapshot 2.5 TG is a broad-spectrum barrier designed for lawns with a wide variety of …In times of unexpected emergencies, having a stockpile of survival food is crucial. Whether it’s a natural disaster, power outage, or any other unforeseen circumstance, having acce...You will need a follow-up application of pre-emergent herbicide 90 days after the first treatment to ensure a full growing season of prevention. Texas has a ...8 steps to file a special civil case. Complete the Special Civil Part complaint (Form A in the Kit). Complete the top part only of Special Civil Part Summons (Form B in the Kit). Do not …Aug 5, 2020 ... To reduce the potential to injure overseeded turf, wait 60 days after seeding or until after the second mowing, whichever is longer, before ...The 11 Best Pre-Emergent Weed Killers in 2024. Scotts Halts Crabgrass & Grassy Weed Preventer. Roundup Landscape Weed Preventer. Preen Garden Weed Preventer. Preen Granular Garden Weed Preventer. The Andersons Granular Pre-Emergent Weed Control. Monterey LG 5130 Weed Impede Herbicide.Pre-emergent herbicides need to be applied at specific times to be effective, typically in early spring before weed seeds begin to germinate. Timing is crucial; applying too early or too late can ...In today’s fast-paced world, staying up-to-date with the latest research topics is essential for professionals in various fields. Whether you are a student, academic, or industry e...Applying a pre-emergent herbicide after the last cultivation can manage these weeds that would otherwise emerge and ultimately return additional seed to the soil, and; Some crops have few post-emergent options (e.g. grass weed control in sorghum, or broadleaf weed control in pulses) and hence often rely on pre-emergent herbicides for in …Pre-emergent herbicides like Oxafert and Oxapro target seasonal weed seeds that are already in the soil, stopping them from germinating, before the weed starts to appear! Pre-emergents are best applied in mid to late Autumn, or when the temperatures start to drop in your location. This is when the seasonal winter weed seeds that are already in ...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 …Onset 10GR is a granular pre-emergent herbicide offering up to 6-month weed germination protection from a broad range of grass weeds including Crabgrass & Summergrass, Parramatta Grass, Crowsfoot, Paspalum and Wintergrass. 5kg of Onset can treat up to 250sqm. Onset 10GR Herbicide is coated on a 200SGN (2mm) dust free, silica granule.How to Apply Liquid Pre-Emergent: Step 1: Use a measuring cup or small kitchen scale to measure the herbicide accurately, and mix in the sprayer according to …By TruGreen July 30, 2016. Video Lawn Care Tips. Timing is everything, especially when it comes to weed control. A well-timed pre-emergent application can stop weeds' roots from developing and spreading to the rest of your lawn so you can enjoy a beautiful, healthy lawn all summer long.Pre-emergent herbicides, often referred to as weed preventers or pre-emergent weed killers, are a crucial component of weed control strategies. Unlike post-emergent herbicides that target existing weeds, pre-emergents act as a “barrier” to prevent weed seeds from germinating. This barrier inhibits the germination of weed seeds, …Feb 22, 2024 · Herbicides come in two major varieties — pre-emergent and post-emergent. Pre-emergent herbicides act as a preventative measure, keeping weed seeds from germinating (check out our guide to the 8 Best Pre-Emergent Herbicides). Post-emergent herbicides kill weeds that have already sprouted. Your best defense against weeds in your yard is to ...
Sep 15, 2022 · The steps for applying a pre-emergent herbicide are: Read the product label to determine the correct dosage and application method. Mix the herbicide with water according to the instructions on the label. Apply the herbicide to the soil around the plants you want to protect. Water the area thoroughly to help the herbicide get into the soil. . Best law schools in us
Proactive Use of Corn Pre-emergence Herbicides. Palmer amaranth with first true leaves. If these weeds aren’t treated at 2 to 3 inches, they’re tough to control with postemergence herbicides. With the continued aggressive growth of herbicide-resistant weeds across the United States, weed scientists assert that an integrated approach of ...Snapshot 2.5 TG Granular Pre-Emergent. Snapshot 2.5 boasts more control than any other pre-emergent herbicide on... Up to 6-8 months of control for 111 broadleaf and grassy weeds. Application rate: 2.3 to 4.6 lb per 1000 square feet. Material must be applied before rainfall or irrigation.Product Details. Specticle G Pre-Emergent Granular Herbicide is manufactured by Bayer and is a reliable, high-quality pre-emergent herbicide that contains the active ingredient Indaziflam and delivers residual control of annual grasses, annual sedges and annual broadleaf weeds in warm-season turfgrass, ornamentals and hardscapes.The best pre-emergent for Bermuda grass is The Andersons DG Pro Turf Barricade. This highly effective pre-emergent herbicide is safe to use on Bermuda grass. And has an excellent reputation with customers for control of summer and winter annual weeds. The top choices at a glance:Get free shipping on qualified Pre-Emergent, Granular Weed Killer products or Buy Online Pick Up in Store today in the Outdoors Department.Mar 7, 2023 ... Am I crazy to be telling people to stop applying pre-emergent on their lawns? Well the reality is, I'm not telling people to do that.Nov 26, 2023 · Pre emergent herbicides provide long-lasting protection, minimizing the need for frequent reapplication. In summary, the benefits of using pre emergent herbicides for your lawn are manifold. They effectively prevent weed growth, reduce weed competition, promote improved , and save you both time and money. Pre-emergent herbicides inhibit seed cell division and stop weed growth in its tracks. They keep weeds from emerging through the soil by depriving the weed seeds …In times of crisis, having access to food is crucial. Whether it’s a natural disaster or a man-made emergency, having a stockpile of food can mean the difference between life and d...Fortunately, there are many products formulated to battle this difficult weed; most will kill many other common lawn weeds as well. There are two broad categories of crabgrass killers: pre-emergent and post-emergent. Pre-emergent crabgrass killers prevent the seeds from sprouting. When applied early enough in the spring, you can …Feb 22, 2024 · Herbicides come in two major varieties — pre-emergent and post-emergent. Pre-emergent herbicides act as a preventative measure, keeping weed seeds from germinating (check out our guide to the 8 Best Pre-Emergent Herbicides). Post-emergent herbicides kill weeds that have already sprouted. Your best defense against weeds in your yard is to ... In today’s digital age, technology has revolutionized many aspects of our lives, including emergency services. Online emergency calls have emerged as a powerful tool in saving live...Get free shipping on qualified Pre-Emergent Lawn Fertilizers products or Buy Online Pick Up in Store today in the Outdoors Department.A pre-emergent herbicide used to prevent the occurrence of weeds such as Crowsfoot Grass, Summer Grass, Winter Grass, Paspalum, and other grassy weeds. 1Ltr of Barricade can treat up to 2500sqm. Barricade Turf Herbicide controls a wide range of pre-emergent grassy weeds and importantly breaks the germination cycle of Poa annua.Snapshot 2.5 TG prevents a wide variety of weeds and can be used on all landscape types. It’s for spring and fall use. Snapshot 2.5 TG is a broad-spectrum barrier designed for lawns with a wide variety of …Apply your first round of crabgrass preventer (also called pre-emergent herbicide) in the early spring before the soil temperature reaches 55 degrees Fahrenheit (12 Celcius) to control crabgrass, henbit, chickweed, poa annua, and other common lawn weeds. For best results, apply a second application of pre-emergent in the early …Pre-emergent herbicide is a lawn care product designed to prevent undesired weeds. A pre-emergent chemical solution may contain one or more of the following active ingredients: Benfluralin - a dinitroaniline herbicide developed to inhibit root and shoot development to prevent weed growth in lawns, crops, and ornamentals.Keeping your lawn healthy and weed-free requires proper maintenance and strategic planning. One essential tool in your arsenal is the use of pre-emergent herbicides. To understand ...Pre-emergent herbicides can be used in the lawn as well as the flower beds. An even been recommended use is to apply a pre-emergent herbicide in the cracks of your driveway and between slabs of concrete and foundation where pesky weeds tend to emerge. Keep in mind when using this product, the purpose is to prevent seeds from germinating..