If you’re looking for ways to keep your St. Augustine grass lawn healthy and weed-free, then you must have come across the term “pre-emergent”. Pre-emergent for St. Augustine grass refers to specific herbicides designed to prevent weed growth by targeting and controlling the weed seeds before they sprout.
But before you invest in any pre-emergent for St. Augustine grass, there are some important factors you need to consider. For starters, you should consider the type of weed to control, the severity of the weed infestation, and the effectiveness of pre-emergent products. It is also essential to read the label carefully to ensure that the product is suitable for use on St. Augustine grass.
Do you want to enjoy a healthy and lush lawn, free from annoying weeds? Are you tired of pulling out weeds every week? Do you want to learn more about pre-emergent for St. Augustine grass and how it can help you achieve your lawn goals? Then read on. In this article, we will explore the benefits of using pre-emergent for St. Augustine grass and provide tips on how to choose the best product for your lawn needs.
10 Best Pre Emergent For St Augustine Grass
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This product is ideal for preventing weeds in large areas up to 5,800 sq ft.
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Ideal for preventing crabgrass, chickweed, oxalis, foxtail, and other weed growth in lawns up to 5,000 sq. ft. all season long.
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Ideal for preventing crabgrass, chickweed and other grassy weed growth in lawns up to 10,000 square feet.
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The herbicide is ideal for preventing weeds from sprouting in an area of up to 15,000 sq ft.
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This product is ideal for preventing the growth of unwanted weeds in lawns or other grassy areas.
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This product is ideal for preventing weeds and promoting healthy growth on a lawn or garden up to 10,000 sq ft.
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This product is ideal for preventing the growth of crabgrass, POA annua, and other problem weeds as a pre-emergent herbicide.
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Southern Ag Atrazine St. Augustine Grass Weed Killer is ideal for controlling broadleaf weeds and grassy weeds in lawns.
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Ideal for controlling broadleaf and grassy weeds in crops, golf course turf, ornamental plants, and non-crop areas.
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10
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It is an effective pre and post-emergent weed killer for lawn and turf grasses.
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1. Pro-Grade Weed Control For Large Areas
If you are looking for a reliable solution to prevent weeds in your garden, Barricade professional-grade pre-emergent weed control can be your go-to product. This pre-emergent weed control is specifically designed to be applied in EARLY SPRING and FALL. It is formulated to stop weeds from germinating and does not help in eliminating existing weeds. With 0.48% of the active ingredient prodiamine, it can prevent over 30 types of grass and broadleaf weeds from growing. This product has been trusted by top turf care professionals to avoid problem weeds without harming desirable plants. The DG Pro formulation allows for better control of weeds, with more particles per square inch of chemical.
Barricade professional-grade pre-emergent weed control provides a simple and effective way to get rid of weeds in your garden. It is easy to apply and can save you a lot of time and effort in the long run. This pre-emergent weed control is perfect for those who are looking for a preventive measure to keep their garden free from weeds.
By using Barricade professional-grade pre-emergent weed control, you can ensure that your lawn and garden remain weed-free for a longer period of time. So, if you want to keep your garden healthy and vibrant, this product can be a great choice for you.
- Prevents over 30 types of grass and broadleaf weeds
- Trusted by top turf care professionals
- DG Pro formulation allows for better control of weeds
- Easy to apply
- Saves time and effort
- – Should only be applied in EARLY SPRING and FALL
- – Does not eliminate existing weeds
2. Halts Crabgrass Preventer – All-Season Weed Control
Looking for a reliable solution to prevent crabgrass? Look no further than Scotts WeedEX Prevent with Halts! This powerful formula is designed to provide season-long protection against crabgrass, stopping it before it even has a chance to start. By applying in early spring, you can enjoy a crabgrass-free lawn all season long. But that's not all – this formula also offers effective pre-emergent control of foxtail, spurge, oxalis, and other grassy and broadleaf weeds.
Fall application of Scotts WeedEX Prevent with Halts is also highly recommended, as it can help prevent winter weeds such as poa annua, henbit, and chickweed. This makes it an ideal solution for maintaining a healthy and beautiful lawn year-round. And with its ability to work on all lawn and grass types (except dichondra or bentgrass), you can use it with confidence no matter what kind of lawn you have.
Overall, Scotts WeedEX Prevent with Halts is a must-have product for anyone looking to keep their lawn healthy and weed-free. With its powerful pre-emergent control and season-long protection against crabgrass, this formula is sure to deliver impressive results.
- Provides season-long protection against crabgrass
- Effective pre-emergent control of foxtail, spurge, oxalis, and other grassy and broadleaf weeds
- Ideal for preventing winter weeds such as poa annua, henbit, and chickweed
- Works on all lawn and grass types (except dichondra or bentgrass)
- Easy to apply
- Helps maintain a healthy and beautiful lawn
3. Scotts Crabgrass & Weed Preventer – 10,000 Sq. Ft.
This powerful crabgrass preventer is perfect for keeping your lawn free of crabgrass and other weeds all season long. It's easy to apply, and works quickly to prevent crabgrass and other weeds from taking root in your lawn. Simply apply it in the spring for all-season protection against crabgrass and other problem weeds.
In addition, this powerful product is also effective against winter weeds like poa annua, henbit, and chickweed. Just apply it in the fall to prevent these annoying weeds from taking over your lawn. And don't worry about rain, snow, or freezing weather – this product is designed to perform well in any conditions.
So if you want a beautiful, healthy lawn all year round, this crabgrass preventer is the perfect solution. It's easy to use, effective, and reliable – everything you need to keep your lawn looking great.
- Effective against crabgrass and other problem weeds
- Works all season long for hassle-free lawn maintenance
- Designed to perform well in any weather conditions
- – May not be suitable for all types of lawns
- – May require multiple applications for best results
4. Prodiamine Power: 45lbs For 15k Sq Ft!
The .38% Prodimaine is an effective solution for preventing unwanted weeds such as crabgrass and poa annua in your lawn. This product can be used on various types of grass including Bahiagrass, Centipedegrass, Bermudagrass, Zoysia, St. Augustinegrass, Seashore Paspalum, and Tall Fescue (including turf-type). It is specifically formulated to prevent crabgrass and poa annua, among other weeds.
With a concentration of .38% Prodimaine, this product is highly effective in preventing the growth of weeds in your lawn. It is recommended to use this product in the spring for crabgrass prevention and in the fall for poa annua prevention.
Please note that this product cannot be shipped to New York.
- Effective solution for preventing unwanted weeds in your lawn
- Can be used on various types of grass
- Specifically formulated to prevent crabgrass and poa annua
- Highly effective with .38% Prodimaine concentration
- – Cannot be shipped to New York
5. Quali-Pro Prodiamine, Pre-Emergent Herbicide, 5 Lbs, Yellow Granules
Quali-Pro's Prodiamine 65 WDG is a highly effective pre-emergent herbicide that provides control over a wide range of grass and broadleaf weeds. Its flexible application allows for use in both spring and fall, providing season-long crabgrass control. The product comes in a 5-pound bottle and is suitable for use in nurse, landscape, turf, trees, and golf courses.
One of the key benefits of using Quali-Pro's Prodiamine 65 WDG is its excellent compatibility with fertilizers and iron solutions. This makes it an ideal tank mix partner and ensures that your turf stays healthy while remaining free from weeds.
This pre-emergent herbicide is highly effective against a variety of weeds, including annual bluegrass (Poa annua), henbit, knotweed, chickweed, spurge, foxtail, and goosegrass. Its active ingredient, Prodiamine 65%, ensures that your turf remains weed-free for an extended period of time.
- Flexible application allows for use in both spring and fall
- Excellent tank mix partner with fertilizers and iron solutions
- Highly effective against a wide range of grass and broadleaf weeds
6. Dimension Weed Control & Fertilizer – 10k Coverage
Andersons Dimension with 18-0-4 fertilizer is a top-quality pre-emergent weed and feed that is used by professionals. It is an outstanding product that provides season-long protection against annual grasses and broadleaf weeds while also feeding the turf. This product is particularly useful for controlling crabgrass as it can be applied both before crabgrass emergence and during the early stages of its growth.
This pre-emergent weed and feed contains .164% of the active ingredient dithiopyr, which is known for its effectiveness. It can be applied in the spring, as well as in late summer and early fall. It is safe to use on a variety of grass types including Kentucky bluegrass, bentgrass, fescue, ryegrass, bahia, bermuda, carpetgrass, centipede, St. Augustine, zoysia, buffalograss, and kikuyugrass. The small particle size allows for more particles per square inch and more uniform coverage.
DG Technology is a unique feature of this product that allows granules to break down into thousands of microparticles with irrigation or rainfall, moving weed control and nutrients directly into the soil. Moreover, this product is made in the USA, which means that it meets the highest standards of quality and safety.
- Provides season-long protection against annual grasses and broadleaf weeds while also feeding the turf
- Controls crabgrass effectively at all stages of its growth
- Can be used on a wide variety of grass types
- Small particle size allows for more uniform coverage
- DG Technology ensures that weed control and nutrients are delivered directly to the soil
- Made in the USA, ensuring high quality and safety standards
7. Prodiamine 65 Wdg: Crabgrass And Weeds Killer
The 5oz bottle of pre-emergent is a perfect solution for DIYers who need small quantities of pre-emergent. This professional formula is designed to provide maximum coverage of 6,000 sq ft for a full year at the maximum rate. The product is effective in preventing crabgrass and poa annua in spring and fall. Apart from these, it also stops other listed weeds.
The water-dispersible granule (WDG) allows easy mixing with water and spraying out as a liquid via a pump or battery sprayer. However, the product must be watered in. The product is suitable for all grass types, including Kentucky Bluegrass, Perennial Rye, Turf Type Tall Fescue, Bermuda, Zoysia, St Augustine, Centipede, and Bahia Grasses. Spring and fall applications are recommended, and the recommended mix is 0.183oz or 5.2 grams of prodiamine 65 WDG in 1 gallon of water. This spray mix can cover 1,000 sq ft.
The 5oz bottle of pre-emergent is an excellent product for homeowners who need small quantities of pre-emergent to prevent weed growth. The product is easy to mix and apply and can cover a vast area for a full year. The product is suitable for all grass types, making it a versatile and convenient solution for all your lawn care needs.
- Effective in preventing crabgrass and poa annua in spring and fall
- Stops other listed weeds
- Suitable for all grass types
- Easy to mix and apply
- Covers a vast area for a full year
- – Product must be watered in
8. Southern Ag Atrazine St. Augustine Grass Weed Killer, 1 Gallon
This herbicide is highly effective in killing a wide variety of broadleaf weeds, making it a popular choice among homeowners and professional landscapers alike.
It is also suitable for use on centipede grass, providing excellent weed control without harming the grass itself.
In addition to its broad-spectrum weed-killing capabilities, this herbicide also provides suppression of crabgrass, which can be a persistent and difficult-to-control weed in many lawns and gardens.
This product is formulated to control both emerged weeds and weeds from seed, making it a versatile and reliable solution for maintaining a healthy, attractive lawn or garden.
- Effective in killing a wide variety of broadleaf weeds
- Suitable for use on centipede grass
- Provides suppression of crabgrass
- Controls both emerged weeds and weeds from seed
9. Hi-Yield Atrazine Weed Killer
The Atrazine herbicide contains 4.00% of the active ingredient and is highly effective in controlling or suppressing annual bluegrass, chickweed, henbit, moneywort, pennywort (dollarweed), spurge, and other weeds in St. Augustine and Centipede grass. This herbicide can be used in various applications, including residential, commercial, and recreational areas. It offers long-lasting protection against weeds and prevents their regrowth for extended periods of time. The Atrazine herbicide is easy to apply and requires minimal efforts, making it an ideal choice for both experienced and novice users.
The Atrazine herbicide is a reliable and efficient solution for weed control that ensures a healthy and lush lawn. It is safe to use with minimal risk of toxicity or harm to pets, wildlife, or the environment. The Atrazine herbicide is a cost-effective and convenient option that provides effective weed control and long-lasting results.
Overall, the Atrazine herbicide is a highly recommended product for anyone looking for a reliable and efficient solution for weed control that provides long-lasting results and minimal environmental impact.
- Contains 4.00% active ingredient
- Controls or suppresses various weeds in St. Augustine and Centipede grass
- Offers long-lasting protection against weeds
- Easy to apply with minimal effort
- Safe to use with minimal risk of toxicity or harm to pets, wildlife, or the environment
- Cost-effective and convenient option
10. Pro Concentrate Weed Killer For Lawngrass
Liquid Harvest Mesotrione is a highly effective herbicide that can help you get rid of 46 broadleaf species of weeds and grass. It is a unique weed killer that prevents photosynthesis in plants by targeting their shoots, roots and leaves. The herbicide is absorbed quickly and starts working immediately upon application. However, it may take up to 2-3 weeks before the full death of weeds occurs.
To activate Mesotrione, it must be watered within 10 days of application if rainfall is absent. The recommended amount of water is 0.15 inches. This herbicide is safe for use in Kentucky Bluegrass, Centipede grass, Buffalo grass, Tall Fescue, Perennial Ryegrass, Fine Fescue, and St. Augustine Grass (grown for sod only). However, it should not be applied to Bentgrass, Poa annua, kikuyugrass, zoysiagrass, seashore paspalum, or bermudagrass. Liquid Harvest Mesotrione can only be used on dormant bermudagrass to remove weeds or target grasses from it. If the bermuda is semi-dormant, it may result in whitening and damage to the bermuda.
Liquid Harvest Mesotrione can be mixed with 30 gallons of water per acre, using 4-8 ounces of the herbicide. The use of a surfactant can help increase its effectiveness. Always read the label instructions carefully before using the herbicide.
One of the benefits of Liquid Harvest Mesotrione is that it prevents crabgrass seed germination while killing broadleaf weeds (dandelion and clover among others) on contact. It allows certain cool-season turfgrass to grow in a weed-free environment. With its 40% active ingredient that inhibits photosynthesis in susceptible plant species, this herbicide is a very useful tool to maintain a weed-free lawn.
- Effective in targeting 46 broadleaf species of weeds and grass
- Prevents crabgrass seed germination
- Kills broadleaf weeds on contact
- Allows certain cool-season turfgrass to grow in a weed-free environment
- 40% active ingredient that inhibits photosynthesis in susceptible plant species
- – May take up to 2-3 weeks for full death of weeds to occur
- – Not suitable for use in Bentgrass, Poa annua, kikuyugrass, zoysiagrass, seashore paspalum, or bermudagrass (unless dormant)
- – May result in damage to bermudagrass if not used on dormant bermuda
Best Pre Emergent For St Augustine Grass FAQs
Are there any specific application techniques or recommendations for using pre-emergent herbicides on St. Augustine grass?
Yes, there are specific application techniques and recommendations for using pre-emergent herbicides on St. Augustine grass. St. Augustine grass is a warm-season grass commonly found in the southern United States, and it can be susceptible to weed invasions if not properly cared for. Pre-emergent herbicides are an effective way to prevent weeds from germinating in St. Augustine grass.
When applying pre-emergent herbicides, it is important to follow the instructions on the label carefully. It is recommended to apply the herbicide in the spring before weeds begin to germinate. The best time to apply is when soil temperatures reach 55-60 degrees Fahrenheit for four to five consecutive days. This usually occurs in early to mid-March in most areas.
To ensure proper coverage, it is important to use a spreader to evenly distribute the herbicide over the entire lawn. It is also important to water the lawn after application to activate the herbicide and ensure it reaches the soil.
It is important to note that pre-emergent herbicides can also prevent desirable grasses from germinating, so it is important to carefully choose the right herbicide for your lawn type and follow the application instructions carefully. Consulting with a lawn care professional can also be helpful in determining the best pre-emergent herbicide and application techniques for your specific lawn.
Can pre-emergent herbicides be applied in combination with fertilizers for St. Augustine grass?
Yes, pre-emergent herbicides can be applied in combination with fertilizers for St. Augustine grass. Pre-emergent herbicides are used to control weed growth by preventing the seeds from germinating, while fertilizers are used to provide essential nutrients for the healthy growth of the grass. The combination of pre-emergent herbicides and fertilizers can help maintain a healthy lawn while keeping weeds at bay.
However, it is important to note that the application of pre-emergent herbicides and fertilizers should be done at different times to avoid any negative effects. Pre-emergent herbicides should be applied before the weeds start to grow, typically in the early spring or fall. Fertilizers, on the other hand, should be applied during the growing season, usually in the spring or summer.
It is also recommended to read the label instructions carefully before applying any pre-emergent herbicides and fertilizers to ensure that they are safe for St. Augustine grass and to follow the recommended application rates. Additionally, it is advisable to consult with a lawn care professional to determine the best course of action for maintaining a healthy lawn.
How long does pre-emergent herbicide remain effective for controlling weeds in St. Augustine grass?
Pre-emergent herbicides are used to control the growth of weeds before they emerge from the soil. The effectiveness of a pre-emergent herbicide in controlling weeds in St. Augustine grass depends on several factors such as the type of herbicide used, the application rate, and the environmental conditions of the area.
Typically, pre-emergent herbicides remain effective for controlling weeds in St. Augustine grass for up to 3-4 months. However, this may vary depending on the type of herbicide and the environmental conditions of the area. For instance, if the area receives heavy rainfall or irrigation, the herbicide may break down faster, reducing its effectiveness.
It's important to note that pre-emergent herbicides are not effective against all types of weeds. They only target specific types of weeds that germinate from seeds. Perennial weeds and weeds that propagate through runners or rhizomes may not be affected by pre-emergent herbicides.
In conclusion, pre-emergent herbicides can be an effective tool for controlling weeds in St. Augustine grass for up to 3-4 months. However, it's important to choose the right herbicide, apply it correctly, and consider the environmental conditions of the area to ensure maximum effectiveness.
What are the most effective pre-emergent herbicides for controlling weeds in St. Augustine grass?
When it comes to controlling weeds in St. Augustine grass, pre-emergent herbicides are an effective solution. These herbicides work by preventing weed seeds from germinating, thus reducing the need for post-emergent weed control.
One of the most effective pre-emergent herbicides for St. Augustine grass is atrazine. Atrazine is a selective herbicide that targets broadleaf weeds and certain grassy weeds. It is applied in the early spring, before weed seeds have a chance to germinate.
Another pre-emergent herbicide that works well in St. Augustine grass is prodiamine. Like atrazine, prodiamine is selective and targets both grassy and broadleaf weeds. It is applied in the fall or early spring.
Dithiopyr is another pre-emergent herbicide that is effective in controlling weeds in St. Augustine grass. It targets both grassy and broadleaf weeds and is often used in combination with post-emergent herbicides for complete weed control.
It is important to note that pre-emergent herbicides should be applied at the proper time and with proper application rates to ensure maximum effectiveness. Consult with a lawn care professional or refer to the product label for specific instructions.
What is the best time of year to apply pre-emergent for St. Augustine grass?
The best time of year to apply pre-emergent for St. Augustine grass is typically in the early spring. This is because pre-emergent herbicides work by preventing the growth of weed seeds before they have a chance to germinate. By applying pre-emergent in the early spring, you can target any weed seeds that may be present in your lawn before they have a chance to sprout. It's important to note that pre-emergent should be applied before the weeds have a chance to germinate, so timing is critical. In addition, it's important to follow the manufacturer's instructions carefully, as over-application can damage your lawn. By applying pre-emergent at the right time and using it correctly, you can help keep your St. Augustine grass healthy and weed-free.