Best Weed Killer Sprays and Sprayers for 2021 Lawns

Lawn weeds are those uninvited guests that compete with your yard for water, nutrients, and light, as well as foster diseases and pests. Regardless of whether you have green fingers i.e. the ability to make anything grow when healthy plants thrive in your garden, these pesky invaders thrive alongside them.

Using a weed spray and sprayer will make getting rid of the unwanted weeds much easier for you. Keep reading for my recommended sprayers to use around the house and what spray/solution to use for the type of weeds that you have.

This post is divided into 3 parts:

Types Of Lawn Sprayers 

Choosing the best sprayer for your needs depends on a few factors. Consider your usage area (full lawn or garden), what you want to apply, and how often you plan on using it.

Hose-End Sprayers

The most lightweight for small applications is the hose-end sprayer. These are the lowest price types of sprayers out there but will cover the least amount of area as well. I don’t like these for lawn applications unless you have a small area to treat and you have a garden hose hookup. But these are also easy to mix product in as most will have measurement lines for easy filling. I like The Andersons Refillable Multipurpose Hose-End Sprayers as you get 2 in the pack and can use one for herbicide and one for insecticide.

Hand Held Lawn & Garden Sprayers

The most common for homeowners is the handy handheld sprayer. Perfect for spraying product to gardens or killing weeds around the fenceline, driveways, borders, etc… These will be typically a hand pump to build up pressure in the sprayer or battery-powered that will offer a constant flow. Some will come with a shoulder support strap for easier carrying while smaller ones will just have a lock handle so you can carry it around.

I usually fill my 2-gallon handheld with a liquid weed killer and keep it around the garage during spring/summer. I like the Smith Contractor 2-Gallon Sprayer for this as it has a standing base to keep it upright and in-place.

Backback Sprayers

For bigger gardens or yards, or if you don’t want to lug around a handheld, you should consider using a backback sprayer. They usually cost a little more than handhelds but are easier to handle yet holding more product so you can get the job done without having to keep refilling and mixing product.

These are also found as pump-powered or battery-powered and are usually 3 gallons up to 5.3-gallon capacities.

I like my Kimo battery-powered 3-gallon sprayer for use around the yard. It’s big enough where I can put down what I need and it’s not too heavy where I wake up with back pain the next day.

Tow-Behind Sprayers

Okay, now for the bigger lawns I take care of I’ll use a tow-behind. These can be found most commonly in the 5-15 gallon range and up to 60 gallons for the big boys. I like the Chapin tow-behind sprayers and they also have ATV mounted sprayers as well.

A quick overview of my recommendations:

BEST HANDHELD
VIVOSUN 1.3 Gallon Lawn and Garden Pump Pressure Sprayer with 3...
BEST BACKPACK BATTERY POWERED
Battery Powered Backpack Sprayer, KIMO 3 Gallon Garden Sprayer w/...
BEST TOW BEHIND
Chapin International 97700N EZ Dripless Tow Behind Sprayer, 25...
VIVOSUN 1.3 Gallon Lawn and Garden Pump Pressure Sprayer with 3...
Battery Powered Backpack Sprayer, KIMO 3 Gallon Garden Sprayer w/...
Chapin International 97700N EZ Dripless Tow Behind Sprayer, 25...
BEST HANDHELD
VIVOSUN 1.3 Gallon Lawn and Garden Pump Pressure Sprayer with 3...
VIVOSUN 1.3 Gallon Lawn and Garden Pump Pressure Sprayer with 3...
BEST BACKPACK BATTERY POWERED
Battery Powered Backpack Sprayer, KIMO 3 Gallon Garden Sprayer w/...
Battery Powered Backpack Sprayer, KIMO 3 Gallon Garden Sprayer w/...
BEST TOW BEHIND
Chapin International 97700N EZ Dripless Tow Behind Sprayer, 25...
Chapin International 97700N EZ Dripless Tow Behind Sprayer, 25...

Last update on 2021-07-28 / Affl links / Images from Amazon Product Advertising API

Top 5 Handheld Sprayers for Liquid Weed Killers

1. Smith Contractor Sprayer for Weed Killers, Herbicides, and Insecticides

D.B. Smith Smith Contractor 190504 Sprayer, 1 Gallon, Black &...
323 Reviews
D.B. Smith Smith Contractor 190504 Sprayer, 1 Gallon, Black &...
  • Versatile sprayer designed not only for lawns, but also for commercial cleaning, sanitizing, and applying harsh chemicals
  • Premium, commercial grade shut-off with comfortable grip; lock-on feature; and easy-to-clean, in-line filter
  • 14 inch poly wand with Viton seals throughout pump and shut-off for long-term resistance to chemicals

Last update on 2021-07-28 / Affl links / Images from Amazon Product Advertising API

The Smith Contractor weed, herbicide and insecticide sprayer is an ideal choice for lawns, but can also be used for commercial cleaning tasks, and with harsh chemicals. It is made from high quality material, and features a commercial grade shutoff complete with a comfortable grip, making it a joy to use across longer periods.

Further, this feature rich two-gallon capacity herbicide sprayer is fitted with a nickel-plated brass poppet for enhanced strength and precision, and an in-line filtration system. Furthermore, the 21-inch poly wand of the sprayer is embedded with Viton gaskets, which provide unmatched chemical resistance, and can be easily replaced without any tools. 

The Smith Contractor sprayer is equipped with a pressure relief valve, which is designed to release the pressure before releasing the pump to avoid the herbicide from spraying all over you. The teardrop shaped Smith Contractor sprayer comes with a dedicated slot to store the wand tip to protect it against harsh elements. 

The package includes five nozzles for great versatility including a poly and brass nozzle for a solid stream to a fine mist, high volume fan nozzle for a wide spray, and a foaming nozzle for better weed killing results. The Smith Contractor weed sprayer is backed by a one-year warranty against any manufacturer defects. 

Pros: 

  • 5 types of nozzles 
  • 2-gallon capacity 
  • In-line filtration system 
  • Commercial grade shutoff with a comfortable grip 
  • 21” poly wand with Viton gaskets 
  • Pressure relief valve

Cons: 

  • Limited to 1 color option 

2. ITISLL Garden Pump Sprayer

ITISLL Portable Garden Pump Sprayer Brass Wand Shoulder Strap for...
10,004 Reviews
ITISLL Portable Garden Pump Sprayer Brass Wand Shoulder Strap for...
  • ? Portable & Multi-Purpose Pressure Sprayer: This hand sprayer can be used for cleaning cars, irrigation plants, pet bathing, home cleaning. TIPS: This lawn sprayer is not suitable for corrosive or acidic solutions.
  • ? Adjustable brass rod: The high-quality brass nozzle can adjust the intensity of the water spray from direct injection to fine mist spray. This sprayer is equipped with a comfortable 50-inch hose and extended 19-inch spray stick, which helps to spray longer distances or inaccessible places!
  • ? Ergonomic handle: The ergonomic handle with locking trigger not only reduces fatigue, but also facilitates long-time spray operation. It can also be used to lock the trigger at the handle for continuous spraying with a steady amount of water. An adjustable shoulder strap makes it easy to hang the sprayer on your body for easy movement.

Last update on 2021-07-28 / Affl links / Images from Amazon Product Advertising API

The ITISLL garden weed sprayer can be ordered in a choice of two great color combinations — white and red and white and black, and three different sizes — 1 gallon, 1.5 gallon, and 2 gallon variants. 

Further, this multifaceted sprayer can be used for an array of different tasks including home cleaning, pet bathing, washing cars, but is not suitable for corrosive or acidic applications. 

The ITISLL sprayer is equipped with a high quality brass nozzle, which can be adjusted from direct injection to fine mist spray. At the end of the 19-inch brass spray wand is a long 50-inch hose to spray easily across longer distances, and hard to reach places. 

It is fitted with an ergonomic handle mated with a locking trigger that collectively allows you to spray for a long period, and without experiencing fatigue. The trigger can be locked, so that you can continuously spray herbicide for longer periods. 

Another neat feature of the ITISLL sprayer is its onsite adjustable shoulder strap, which enhances its overall comfort quotient during use. It is crafted from premium quality PE material, and allows you to see the amount of herbicide remaining through the transparent container. 

Apart from its high quality construction, the ITISLL herbicide sprayer also comes with a safety valve, which releases pressure automatically when it exceeds 2.5 – 3 Bar. Other key features of the ITISLL weed herbicide sprayer include anti-clogging filters, wear resistant rings, and a 1-year manufacturer warranty. 

Pros: 

  • 2 colors and 3 sizes available 
  • Adjustable brass nozzle and 50-inch hose 
  • Ergonomic handle and adjustable shoulder strap 
  • Lockable trigger and pressure release system 
  • 1-year manufacturer warranty 

Cons: 

  • Cannot be used for corrosive or acidic solutions

3. CLICIC Lawn and Garden Portable Sprayer 

Deal
VIVOSUN 2.0 Gallon Lawn and Garden Pump Pressure Sprayer with...
5,054 Reviews
VIVOSUN 2.0 Gallon Lawn and Garden Pump Pressure Sprayer with...
  • Multi-Functional: This practical 2.0-gallon pump pressure sprayer works great for indoor and outdoor use
  • Easy Filling: Super large bowl-shaped mouth and funnel design allows easy, no-mess filling; Just unscrew, fill up the bottle and close the lid; Pump up the pressure and you are ready to spray
  • Translucent Bottle: Unlike other bottles, this VIVOSUN pump pressure sprayer is made with a translucent bottle with calibrations on the side; You can easily check fluid levels to know exactly when and how much to refill

Last update on 2021-07-28 / Affl links / Images from Amazon Product Advertising API

The CLICIC lawn and garden sprayer is available in a choice of three different size variants including 1.3 gallon and 2 gallon, each topped with a funnel opening for easy no mess filling. The nozzle of the CLICIC herbicide sprayer boasts a curved design, and is non-corrosive, leak proof, and fitted with premium quality O-rings.

Adding to this, it showcases a solid construction, and is equipped with comfortable grips, making it easy to use, and without causing strain on your hands. It comes with an ergonomic pump handle for enhanced comfort, and a sleek hose and spray to spray herbicides in restrained spaces. 

The CLICIC herbicide sprayer comes factory fitted with a pressure release protection valve system, which automatically releases excess pressure to prevent risk of container burst. The package also includes a shoulder strap to help you spray without carrying the sprayer, and a shut off locking valve for continuous operation. 

To operate the locking mechanism, you simply have to press and push the lock switch forward. The bowl of the CLICIC herbicide sprayer measures a wide five inches to prevent overflow, whereas its nozzle is adjustable between shower spray and water column spray. 

Pros: 

  • Wide bowl design 
  • Lockable handle for continuous operation
  • Adjustable nozzle 
  • Can spray up to 16 feet 
  • Pressure release protection valve 

Cons: 

  • Quality of shoulder strap could be improved 

4. YT25E Battery Sprayer

YT25E Battery Sprayer - 12V Lithium-ion with Viton Seals &...
734 Reviews
YT25E Battery Sprayer - 12V Lithium-ion with Viton Seals &...
  • 12V Lithium-ion powered. Spray up to 18 tanks on a single charge
  • High grade and reliable Viton capable of handling various lawn care applications
  • Powder coated brass wand and adjustable nozzle included

Last update on 2021-07-28 / Affl links / Images from Amazon Product Advertising API

The YT25E Battery Sprayer boasts a lightweight footprint at just 6.5 lbs, and is powered by a 12-volt lithium ion battery. When fully charged, the battery delivers a 36-hour constant spraying experience, making it easy and effortless to spread herbicide across your lawn. 

It is fitted with industry leading Viton seals, which are stronger, durable, and offer better service life compared to conventional rubber seals. The YT25E Battery Sprayer can spray up to 33 feet horizontally, and 23 feet vertically depending on the content being sprayed. 

The package includes a wide range of high grade nozzles, giving you the flexibility to spray according to your lawn needs. Each nozzle included with the YT25E Battery Sprayer is tested to deliver peak performance, and allows you to spray efficiently and effectively, whether it’s steam, mist or fan. 

The YT25E Battery Sprayer comes with a brass wand, and an adjustable brass nozzle, and delivers a powerful and continuous 30 PSI pressure to reach farther and wider. It comes with a shoulder strap, which reduces the strain on your hands when carrying around a full sprayer. 

Pros:  

  • Lightweight at 6.5 lbs 
  • Viton seals 
  • Variety of high grade nozzles 
  • Adjustable brass nozzle 
  • Shoulder strap 
  • 36-hour battery life 

Cons: 

  • Extra battery not included 

5. Chapin 6-2000 Tree and Turf Pro Backpack Sprayer

Chapin International 62000 Tree and Turf Pro Commercial Backpack...
199 Reviews
Chapin International 62000 Tree and Turf Pro Commercial Backpack...
  • Featuring control flow valve technology for a continuous spray stream at 21 psi and more efficient use of chemicals
  • 4 gallon 4-inch wide mouth opening, translucent tank for easy filling and cleaning
  • Compatible with Common fertilizers, weed killers and pesticides

Last update on 2021-07-28 / Affl links / Images from Amazon Product Advertising API

The Chapin 6-2000 herbicide sprayer is equipped with a long 20-inch stainless steel wand, and a 48-inch reinforced clear PVC hose. It features an adjustable high-quality brass nozzle and can spray at the rate of .4 – .5 gallons per minute. 

When sprayed, the herbicide can reach up to 23 feet horizontally, and 25 feet vertically, making it a great choice for large size lawns. It features a massive 4-gallon tank capacity, and a 4-inch mouth opening, making it easy to fill the container. Further, it is integrated with a three-stage filtration system, which prevents clogging of the sprayer. 

The Chapin 6-2000 sprayer comes with a translucent poly tank, so you know exactly when to refill it. The shutoff assembly included with this sprayer is fitted with a gauge, allowing you to check the pressure in real-time. Further, it comes with a CF valve for consistent flow when spraying. 

The filter basket located in the interior of the Chapin 6-2000 sprayer prevents dirt and debris from accumulating and is easy to assemble and clean. It comes with comfort-padded shoulder straps, so you can spray herbicide to kill weeds without breaking a sweat. 

Pros: 

  • 20-inch wand and 48-inch PVC hose 
  • 5-inch wide mouth opening 
  • Adjustable brass nozzle 
  • Shut off system with pressure gauge 
  • 4-gallon capacity 

Cons: 

  • Does not come with wheels to move it around

When To Use Your Sprayers – Spraying Schedule

Make the most of your sprayer year-round for different applications such as pest control, fertilizing, and disease control. It’s recommended to have multiple sprayers for different applications such as herbicides and insecticides available at your disposal.

Early Spring (Feb-March)

This is the perfect time to get a new sprayer or clean out the one from last season. Use this time to put out a weed pre-emergent, early control for pests, and to fix and lawn diseases that may have started to form over the winter. But only do this if your lawn temp is over 55 degrees.

Spring (March-June)

If you have not yet put down a weed pre-emergent, now is the time to do so in your lawns. For gardens you can use your sprayer for fertilizers and other nutrient boosters.

Summer (July-Sept)

Spray shrubs and plants with an insecticide to control bugs. You can also spray your lawn to keep mosquitos and other insects at bay. Spot spray stray weeds that pop up. Keep spraying benefitial nutrients to your garden.

Fall (Oct-Nov)

Good time for foundation spraying to keep crawling insects such as lawn spiders out of your house as they won’t cross the barrier you put down. Apply a good 2″ line of insecticide around the house.

Top 5 Weed Killer Sprays to use in a Sprayer

Tenacity Herbicide – Best Spray For Homeowners & Commercial

tenacity liquid weed killer spray

Tenacity is regarded as one of the leading herbicides in its segment, and is a supreme warrior against over forty-five broadleaf weed and grass species including Chickweed, Clover, Dandelion, Crabgrass, Yellow Nutsedge, Yellow Foxtail, and Nimblewill. 

Tenacity is billed as a systemic herbicide, meaning it is absorbed and transported through the weed plant’s vascular system, killing the entire plant. Furthermore, it is designed to be used in cool grass lawns, and newly seeded or established turf. 

Naturally derived from a naturally occurring compound produced by the Bottlebrush plant, Tenacity is regarded as a “Reduced Risk” product by the EPA (United States Environmental Protection Agency), and can be applied before or after seeding of tolerant turf grasses to prohibit weeds from germinating. 

Brought to by Syngenta — a leading agricultural company, the active ingredient in Tenacity — Mesotrione is known for preventing Crabgrass seed germination, and kills broadleaf weeds up to six weeks after application. 

Tenacity Application Rates 

Tenacity can be applied with a herbicide sprayer and should be allowed at least six hours of drying time before any rain or irrigation occurs. It is also highly recommended that you use a spot treatment for dense areas to avoid causing damage to your lawn. 

Tenacity may cause temporary whitening around the weed areas of the lawn, which typically returns back to normal color within three to four weeks. However, it is best to use Tenacity with a surfactant to prevent spraying the herbicide in the same area twice. 

How to Mix Tenacity with Surfactant? 

Lawn experts recommend using tenacity with a surfactant to improve weed control and allow the herbicide to stick better with the surface of the weeds. Mix half a teaspoon of Tenacity with around 10 teaspoons of surfactant with one gallon of water (1000 square feet coverage), and increase accordingly depending on the size of the area. 

Next, add a small amount of marking blue dye to the Tenacity and surfactant mixture to see exactly where you’ve sprayed the herbicide. When applied to the turf, the dye will disappear within 24 – 48 hours and does not affect your lawn grass. Lastly, spray the mixture evenly across the lawn, and repeat the application in 10 – 15 days. 

Pros: 

  • Tackles over 45 different weeds 
  • Serves as a pre-emergent and post-emergent weed killer 
  • Destroys tough weeds to the roots 
  • Won’t kill your lawn grass 
  • Fast acting herbicide 

Cons: 

  • May change lawn grass color temporarily if applied excessively

Ortho Weed B Gon Plus Crabgrass Control – Best Spray For Smaller Yards

Ortho Weed B Gon Plus Crabgrass Control Concentrate2, 32 oz.
874 Reviews
Ortho Weed B Gon Plus Crabgrass Control Concentrate2, 32 oz.
  • Kills crabgrass, dandelions and other common lawn weeds
  • Kills weeds to the roots
  • Kills 200+ weeds

Last update on 2021-07-28 / Affl links / Images from Amazon Product Advertising API

If you desire a beautiful, lush lawn, you are going to need more than just water and fertilizer. Ortho Weed B Gon Plus is an all-rounder in the herbicide segment, because it is formulated to kill over 200 types of lawn weeds. It can be ordered in an array of sizes and formulations including with added crabgrass prevention.

Ortho Weed B Gon Plus is also available in ready-to-use, concentrate or hose-end spray bottles, which are easy to apply or as concentrates need to be mixed with water before they can be sprayed. 

Its active ingredients are 2.13% quinclorac, 6.42% 2, 4-D, 0.60% dicamba, and Ortho claims that it only kills the weeds, and not the lawn. Furthermore, Ortho Weed B Gon Plus kills weeds at the root level, and is backed by a full refund if it does not deliver the desired results. 

How to Use Ortho Weed B Gon Plus? 

The ready-to-use formulas of Ortho Weed B Gon Plus are geared towards specific types or small patches of lawn weeds. To apply the ready-to-use Ortho product, you simply have to adjust the onsite trigger or spray nozzle for a wide or narrow spray, and spray at the center of the weeds. 

The Ortho Weed B Gon Plus hose-end spray bottles attach directly to your garden hose, where the water once turned on mixes with the weed killer formula inside the bottle to be applied at the proper strength. 

Mixing Ortho Weed B Gon Plus concentrate takes a little more effort, and is suitable for sprayers that come with a minimum one-gallon reservoir. To create the mixture, add approximately 2.5 ounces of concentrate to a gallon of water, and mix well. Then adjust the spray nozzle, and spray lightly over the weed affected area. 

How Long Does Ortho Weed-B-Gon Plus Take to Work?

This depends on the type of weed, and the level of infestation. Ortho says that the Weed-B-Gon herbicide works almost immediately, when used properly. The best time to spray Ortho Weed B Gon Plus is when the weeds are actively growing, and in daytime temperatures above 45 degrees Fahrenheit, and below 90 degrees Fahrenheit. 

The effectiveness of the Ortho Weed B Gon Plus is not affected by rain or watering for up to an hour after application, and it is not recommended that you apply it more than twice a year. 

With regards to coverage area, 32 ounces of Ortho Weed B Gon Plus concentrate is good for approximately 5000 square feet, whereas 40 ounces for roughly 6250 square feet of lawn real estate. Ortho Weed B Gon Plus is not to be used on fruit trees, wines, berries, and ornamental plants. 

Pros: 

  • Kills over 200 weeds 
  • Does not harm the lawn – guaranteed 
  • Starts working immediately 

Cons: 

  • May not completely eliminate pesky weeds, but does keep them under control 

Green Gobbler Vinegar Weed & Grass Killer — Natural and Organic Weed & Grass Killer 

Deal
Green Gobbler 20% Vinegar Weed & Grass Killer | Natural and...
8,050 Reviews
Green Gobbler 20% Vinegar Weed & Grass Killer | Natural and...
  • KILLS WEEDS & GRASS FAST - Eliminate any type of weed in just a matter of hours. Expect full desiccation in less than 24 hours. Green Gobbler contains 20% acetic acid. Use on crabgrass, dandelions, clover weeds, white clover, moss, etc.
  • SAFE TO USE ANYWHERE - Perfect for residential, commercial, industrial and agricultural use. Apply where weeds and grasses are not desired. Use on driveways, sidewalks, concrete, mulch beds, pavers, flower beds, parking lots, farmlands, barns, etc. Ready to use right out the container.
  • CERTIFIED FOR ORGANIC USE - Completely eliminates and desiccates weeds and grasses without using toxic chemicals. Made straight from corn. OMRI listed weed killer and certified for organic use.

Last update on 2021-07-28 / Affl links / Images from Amazon Product Advertising API

Based in Copiague, New York, Green Gobbler is an esteemed manufacturer of a wide range of home care products, and the Vinegar Weed & Grass Killer is yet another hit addition to the company’s massive product portfolio. 

It is formulated to eliminate any type of weed, and does it rather quickly, sometimes in a span of just a few hours. Green Gobbler can kill several different types of weeds including clover weeds, dandelions, crab grass, white clover, moss, and much more. 

One of the noteworthy features of Green Gobbler is it is safe to use anywhere including residential, commercial, industrial, and agricultural applications. Adding to this, it does not contain any toxic chemicals, and is made from corn. 

The Green Gobbler Vinegar Weed & Grass Killer is OMRI listed (Organic Materials Review Institute), meaning it adheres to strict organic standards. It contains absolutely no cancer-causing chemicals, and Glyphosate, which some experts say is harmful to the environment.

How to Use Green Gobbler Organic Weed Killer? 

Even though Green Gobbler can eradicate many types of weed, it is a non-selective herbicide, so you should refrain from spraying it on healthy grass, and desired plants. Using the Green Gobbler weed killer is easy, where you fill a weed sprayer with the Green Gobbler organic herbicide or simply attach the included trigger sprayer, and spray evenly. 

Once you’ve finish spraying over the affected area only, it is important that you completely drain the leftover liquid, and rinse the sprayer after each use. For best results with Green Gobbler, it is best to use it on a calm, sunny day at temperatures above 65 degrees Fahrenheit, and avoid spraying before or during rainfall, and most importantly on healthy grass or desired plants. 

Pros: 

  • Kills all types of broadleaf weeds 
  • Trigger sprayer included 
  • Certified by OMRI
  • Free of harmful chemicals 
  • Much stronger than table vinegar 

Cons: 

  • Cannot be sprayed on healthy grass areas affected by weeds

Monterey Remuda Full Strength Herbicide

Monterey LG5190 Remuda Full Strength, Non-Selective Post...
100 Reviews
Monterey LG5190 Remuda Full Strength, Non-Selective Post...
  • Weed control - remuda full strength is a non-selective herbicide, it kills both annual and perennial grass, like crabgrass and many broadleaf weeds in lawns like thistle, Clover, Creeping Charlie And poison ivy.
  • Full strength - this is post emergent herbicide is a 41% Glyphosate concentrate with surfactant. Glyphosate is the worlds most commonly used herbicide.
  • Post emergence - this weed Killer is great for control during active growth of Unplanted areas and friendly to use around flowerbeds, trees, and shrubs. It can also be used to control brush and tree species.

Last update on 2021-07-28 / Affl links / Images from Amazon Product Advertising API

The Monterey Remuda is a strong non-selective herbicide that miraculously kills crabgrass, and many types of broadleaf weeds such as thistle, clover and poison ivy. It is a high strength herbicide and contains a potent 41 percent glyphosate concentrate with surfactant. 

Further, the Remuda high strength herbicide is a great choice when looking to control or get rid of active weeds, and can be used around trees, flowerbeds, and shrubs. Since it is already mixed with a surfactant, all you need to do is add water, and spray over the weed-infested areas. 

The Monterey Remuda high strength herbicide can be used easily with a sprayer, and is deemed safe for kids and pets only when it is dry. When sprayed properly, the herbicide moves through the weed plant starting from point of contact through the root system, gradually killing the entire plant. 

It displays visible effects within three to four days on most weeds, and works better when paired with a mark it blue dye to prevent application in the same areas. Since glyphosate is a non-selective herbicide, you should refrain from spraying it over desirable plants. 

It is also not a residual, and has no soil activity, so newly germinated weeds will need another treatment. Application rates for Remuda high strength are 2 tbsp per gallon of water for young and annual weeds, 5 tbsp per gallon of water for general weed control, and 26 tbsp per gallon of water for perennials, trees, bushes, and hard to kill weeds. 

Pros: 

  • Contains 41% glyphosate
  • Controls many broadleaf weeds
  • Already mixed with a surfactant 
  • Kills weed at the root level 

Cons: 

  • May not work as effectively on Nutgrass and Malva (cheese weed)

Southern Ag Lawn Weed Killer

Southern Ag 13503 Lawn Weed Killer with TRIMEC 32oz Herbicide,...
232 Reviews
Southern Ag 13503 Lawn Weed Killer with TRIMEC 32oz Herbicide,...
  • For use on 9 turf types
  • Controls a wide range of lawn weeds
  • A patented combination of 3 proven weed killers

Last update on 2021-07-28 / Affl links / Images from Amazon Product Advertising API

Southern Ag Lawn is a unique, patented formula that can be used to kill a variety of broadleaf weeds in your lawn. It can be used on nine different turf types including St. Augustine, and works especially well on young and tender weeds. 

It contains several active ingredients including 5.30% mecoprop, 3.05% 2, 4-D, 1.29% dicamba, and can be applied easily with conventional and expandable hoses

Recommended formulation is one to one and a half ounces of herbicide per gallon of water for up to 400 square feet of southern grasses, and one and a half ounces to one gallon of water for 400 square feet of northern grasses. 

The Southern Ag Lawn weed killer is pet safe when used according to the instructions on the label. Southern Ag says that mixing the herbicide with a great surfactant will provide increased performance and quicker results. 

Pros: 

  • Can be used on 9 turf types 
  • Formulated to many broadleaf weeds 
  • Covers up to 12,000 square feet

Cons: 

  • Surfactant not included

Lawn Weed Herbicide Spray Buying Guide

weed killer spray buyer guide

Local garden centers and home improvement stores stock a wide assortment of spray-on herbicides, making it a bit tricky to choose the right one for your lawn. To make the right choice, you will have to get “up close and personal” with the weeds growing in your lawn, and answer a few important questions. 

What type of weeds are growing in your lawn? 

First, the most important thing is to select a herbicide that is formulated to kill the specific weeds growing in your lawn. So, start by examining the unwanted pests to determine the type of weed such as whether they are annual weeds like crabgrass, seasonal weeds, or if they are harder to control weeds such as dandelions and nutsedge. 

5 trusted websites that can help you identify weeds:

1. Connecticut Agricultural Experiment Station

2. National Gardening Association

3. Rutgers New Jersey Agricultural Experiment Station

4. Virginia Tech Weed Identification Guide

5. Weed Science Society of America

6. CrabgrassLawn Weed Directory

can you spray weed killer on wet grass

Can You Spray Weed Killer On Wet Grass?

If you are using a liquid weed killer product, it is recommended not to put it down on wet grass as it will dilute the effectiveness of the killing agent. You want a liquid product to have a good 1-3 hours before it gets watered in so you get the full benefit of it attacking the plant.

If you use a granular product then in most cases it would be okay to put it down on wet grass, as you will want to water it in to activate the product.

Is your goal to prevent weeds from growing or eliminate those already growing? 

Before getting into whether you’d like to prevent or eliminate weeds, you should educate yourself on the different types of herbicides. 

Post-Emergent Herbicides – these herbicides are some of the most popular substances used for weed control, and basically designed to prevent weeds that are already up and growing. When sprayed on weed plants, they work by penetrating throughout the plant system, right down to the roots, and killing them. 

But it is worth mentioning that most post-emergent herbicides are “nonselective”, meaning that they can harm both the weeds, and the desirable plants in your lawn, hence should be used with caution. 

Post-emergent herbicides are a great choice for use over patios, driveways, walkways, but you wouldn’t want to use a hose-end sprayer and broadcast a nonselective herbicide over a lawn filled with prized flowers or across a vegetable garden. You can however try using a precise spray to target only the unwanted weeds in these precious areas. 

Pre-emergence Herbicides – just like the name would suggest, pre-emergence herbicides when sprayed prevent weeds from emerging in your lawn. The chemicals in pre-emergence herbicides do not necessarily affect germination, but rather stop the growth of new root cells in baby weed plants.

These pre-emergence herbicide chemicals do not affect established plants, as they already have a developed, healthy and hearty root system. Pre-emergence herbicides require water to activate them, and direct the chemicals down to the root system of newly sprouted weeds.

Pre-emergence herbicides can help control and eliminate  several different types of weeds of your lawn, especially crabgrass. If you encounter weeds in specific areas of your lawn every year, then spraying a pre-emergence herbicide can prevent future occurrences.

How much liquid herbicide will you need? 

This completely depends on how big or small the area is, but generally, a ready-to-use herbicide that does not have to diluted with water works best for smaller areas. If you are looking to control weeds spread across a broader area, then you may want to consider a more concentrated product. 

What is a surfactant, and how does it work? 

Surfactants are regarded one of the most versatile products in the chemical industry. The word “surfactant” is derived from the words “surface active agent”, and is used in a wide range of applications ranging from agriculture to household detergents. 

When it comes to herbicides, surfactants serve as a wetting agent to increase the penetration and overall effectiveness of almost any herbicide. Some herbicides come fully loaded to include a surfactant, whereas others may require you to add surfactant to increase their activity. 

What is the best time to apply spray weed killers? 

Given that not all herbicides are formulated alike, they need to be applied at different times of day for optimal effectiveness.

The best time to apply systemic lawn herbicides for broadleaf weeds is within certain temperature ranges 70-90 degrees but is not that effective when temperatures are too low.
 
Refrain from applying weed killers around midday or early afternoon in the summer, as the herbicides may quickly dry out the leaves, resulting in less herbicide absorption. Pre-emergence herbicides can however be applied at any time of the day, given that they work at the soil level to prevent the weeds from growing.

Safe use practices for liquid weed killers

Weed plants are part of nature but can prove to a disaster for many lawns. When used properly and safely, herbicides can be an effective weed control solution. Contrarily, a careless approach to weed control can lead to damage to desirable plants and may be harmful to you and others. 

1. Always read the label – just like any other chemical-based products you may use, it is important that you read the label on the herbicide container, and understand the instructions before use. Some labels may be daunting to read, given their length, or fine print, but you should still view the entire label, whether on the container or online on the manufacturer website. 

2. Use protective equipment – even if you are using an organic herbicide, it is good practice to use protective equipment such as gloves and safety glasses. 

4. Understand “signal words” – these words are required by the Environmental Protection Agency (EPA) to warn users about the levels of toxicity of herbicide. For example, the word “caution” indicates that the herbicide is slightly toxic or relatively non-toxic, hence may cause acute illness if inhaled, swallowed or exposed to the skin. 

Herbicides with signal words “danger” or “poison” should be handled with extreme caution, as they can cause severe damage or death in worse cases. And some herbicides may contain more than one signal word, which indicates that it may affect the body in different ways such as when exposed to skin, and if inhaled or swallowed. 

Final Thoughts: 

Not all unwanted plants are weeds, but there are certain weeds that can become invasive and problematic in your lawn. While you can use any of the herbicides mentioned on this list for effective and efficient weed control, there are other things you can do to speed up the process, and bid adieu to weeds permanently.

You can start by adding mulch over the weeds to block the sunlight to the area to prevent them from germinating. Another great weed control option is to manually pull them out including their roots. And if you are feeling hungry, you can even eat some weeds when they are young and tender such as purslane, amaranth, and lamb’s quarters.