· weed killers · 14 min read
Best Weed Killers for St. Augustine Grass: Banish Weeds, Keep Your Lawn Lush
Eliminate weeds and maintain your St. Augustine grass with the best weed killers! We review top products to help you choose the perfect one for your lawn.
St. Augustine grass, renowned for its fine texture and emerald-green hue, often faces invasion from pesky weeds. To preserve the beauty and health of your lawn, selecting the best weed killer is crucial. In this comprehensive guide, we present a curated range of top-rated weed killers specifically designed for St. Augustine grass, empowering you to effectively eliminate unwanted plants and achieve a thriving, weed-free lawn.
Overview
PROS
- Effectively controls a wide range of broadleaf weeds without harming St. Augustine grass.
- Prevents crabgrass and other annual weeds from emerging.
- Easy-to-use liquid formula that can be applied with a hose-end sprayer or pump sprayer.
CONS
- May require multiple applications for complete weed control.
- Can be harmful to beneficial insects, so use with caution.
Southern Ag Atrazine St. Augustine Weed Killer is a powerful herbicide specifically formulated to target and eliminate unwanted broadleaf weeds while preserving the health and vitality of St. Augustine grass. Its active ingredient, atrazine, works by disrupting photosynthesis in weeds, causing them to wilt and die. This weed killer is highly effective against common lawn weeds such as clover, dandelions, chickweed, and spurge, ensuring a healthier, weed-free lawn.
The easy-to-use liquid formula of Southern Ag Atrazine St. Augustine Weed Killer makes application a breeze. Simply attach the bottle to a hose-end sprayer or pump sprayer, adjust the desired dilution ratio, and spray directly onto the target weeds. The non-selective nature of atrazine means it will control any broadleaf weeds it comes into contact with, including both emerged and germinating weeds. To achieve optimal results, apply this weed killer when weeds are actively growing and avoid spraying during drought conditions.
PROS
- Effectively kills common lawn weeds like dandelions and clover without harming St. Augustine grass when used as directed.
- Easy-to-use ready-to-spray formula covers up to 16,000 square feet, making it ideal for large lawns.
CONS
- May not be suitable for all types of lawns, always read and follow the label instructions carefully.
- May require multiple applications for best results, especially for heavily infested areas.
Ortho WeedClear Weed Killer for Lawns Ready-To-Spray is a convenient and effective solution for controlling weeds in St. Augustine lawns. Its ready-to-use formula makes it incredibly easy to apply, saving you time and hassle. The formula specifically targets common lawn weeds like dandelions and clover while leaving your St. Augustine grass unharmed when used as directed. This makes it an excellent choice for homeowners who want to maintain a healthy and weed-free lawn without damaging their valuable grass.
Covering up to 16,000 square feet, this weed killer is ideal for large lawns. It effectively kills weeds without harming the grass, giving you a lush, green lawn that's free from unsightly weeds. However, it's important to note that multiple applications may be necessary for heavily infested areas, and it's crucial to always read and follow the label instructions carefully to ensure optimal results without causing damage to your lawn.
PROS
- Specifically designed to target and eliminate common weeds in St. Augustine lawns.
- Convenient 2-in-1 formula simultaneously fertilizes and controls weeds.
- Covers a vast area of up to 5,000 sq. ft., ensuring comprehensive lawn care.
- Easy-to-follow instructions for quick and effortless application.
CONS
- May temporarily discolor the lawn, but color will return within a few days.
- May require multiple applications for stubborn weeds.
Introducing Scotts Turf Builder Bonus S, the ultimate solution for a weed-free, thriving St. Augustine lawn. This 2-in-1 formula combines the effectiveness of a weed killer with the nourishment of a fertilizer, saving you time and effort. Its carefully crafted composition targets and eliminates common weeds like dollarweed, clover, and chickweed, allowing your St. Augustine grass to flourish. Covering a generous area of up to 5,000 sq. ft., this product ensures comprehensive lawn care, delivering a lush, healthy lawn you'll be proud of.
Applying Scotts Turf Builder Bonus S is a breeze. Simply follow the clear instructions, and you're good to go. While you may notice a temporary color change in your lawn, rest assured that the vibrant green color will return within days. Remember, for particularly persistent weeds, multiple applications may be necessary to achieve optimal results. Elevate your St. Augustine lawn to new heights with Scotts Turf Builder Bonus S, the go-to choice for a weed-free, beautiful lawn that will be the envy of your neighborhood.
PROS
- Effectively controls a wide range of broadleaf weeds without harming St Augustine grass
- Easy to apply, requiring only a simple spray or granular application
- Long-lasting protection, keeping weeds at bay for up to 8 weeks
- Safe for use around trees, shrubs, and other desirable plants
CONS
- May require multiple applications for complete weed control
- Can be harmful to aquatic life, so avoid using near water sources
Hi-Yield Atrazine Weed Killer is a selective herbicide specifically designed for St Augustine grass. It effectively targets and controls a variety of broadleaf weeds, including common lawn pests like crabgrass, dandelions, and clover, without harming the desirable St Augustine grass.
The product is easy to apply, requiring either a simple spray or granular application. The long-lasting formula continues to protect your lawn from weeds for up to 8 weeks, ensuring a lush, weed-free landscape. Additionally, this weed killer is safe for use around trees, shrubs, and other desirable plants, making it a convenient and effective solution for your lawn care needs.
PROS
- Specifically formulated to target weeds commonly found in St. Augustine grass, including crabgrass, chickweed, and dandelions.
- Ready-to-spray formula makes application quick and easy, saving you time and effort.
- Concentrated formula provides effective weed control, ensuring maximum protection for your lawn.
- Safe for use on St. Augustine and Centipede grasses, giving you peace of mind.
- Six-pack ensures you have ample supply to treat your entire lawn.
CONS
- May require multiple applications for complete weed elimination.
- Can be harmful to beneficial insects, so use with caution.
Spectracide Weed Stop For Lawns For St. Augustine & Centipede Lawns is the perfect solution for homeowners looking to keep their lawns pristine and weed-free. This easy-to-use, concentrated formula effectively targets common weeds found in St. Augustine grass, including crabgrass, chickweed, and dandelions. The ready-to-spray design makes application a breeze, and the six-pack ensures you have enough to treat your entire lawn.
The formula is safe for use on both St. Augustine and Centipede grasses, giving homeowners peace of mind when applying it to their lawns. While it may require multiple applications for complete weed elimination, the effective formula ensures maximum weed control, resulting in a healthy, weed-free lawn. When used with caution to avoid harming beneficial insects, Spectracide Weed Stop For Lawns is a must-have for any homeowner looking to maintain a beautiful, thriving lawn.
PROS
- Eliminates tough weeds like crabgrass, clover, dandelions, and more, ensuring a weed-free lawn all season long.
- Prevents new weeds from sprouting for up to four months, giving your lawn a head start against future infestations.
CONS
- May require multiple applications for complete control of certain weed species, including nutsedge.
- Keep children and pets off treated areas until the granules have fully watered in to avoid exposure to chemicals.
When it comes to keeping your lawn healthy and weed-free, BioAdvanced Season Long Weed Killer + Preventer is an indispensable tool. Its powerful formula targets over 200 different weed species, including the pesky crabgrass and clover that can mar the beauty of your St. Augustine grass. But this product goes beyond just eliminating existing weeds; it also forms a protective barrier that prevents new ones from taking root for up to four months, giving your lawn a significant advantage in the battle against weeds.
Applying BioAdvanced Season Long Weed Killer + Preventer is a breeze. Simply broadcast the granules evenly over your lawn using a spreader. The granules will quickly dissolve and start working their magic, delivering nutrients to your grass while effectively controlling weeds. As a result, you'll be rewarded with a lush, vibrant lawn that's the envy of your neighborhood. Just remember to keep children and pets off the treated area until the granules have fully watered in, and you'll be all set to enjoy a weed-free lawn for the entire season and beyond.
PROS
- Effectively eliminates weeds without harming St. Augustine grass
- Concentrated formula provides maximum coverage and extended weed control
- Easy-to-use design allows for precise application
- Environmentally friendly and safe for use around pets and children
CONS
- Requires dilution before use
Image Weed Killer Concentrate is the ultimate solution for keeping your St. Augustine grass pristine and weed-free. This potent concentrate packs a punch against stubborn weeds while ensuring the safety of your prized lawn. Its carefully crafted formula specifically targets weeds, leaving your St. Augustine grass unharmed.
The Image Weed Killer Concentrate boasts a wide reach, covering ample areas with its concentrated formula. This means fewer applications and longer-lasting weed control, saving you time and effort. Its ease of use is another perk, featuring a user-friendly design that makes precise application a breeze.
PROS
- Effectively targets and eliminates a wide spectrum of weeds, including stubborn ones like crabgrass and dandelions.
- Formulated specifically for Southern lawns, ensuring optimal results on St. Augustine grass.
- Pre-mixed formula in a convenient ready-to-spray container for easy application.
CONS
- May require multiple applications for complete weed control, especially in heavily infested areas.
- Follow label instructions carefully to avoid potential harm to desirable plants.
Roundup for Lawns (Southern) is the ultimate solution for weed control in St. Augustine lawns. Its powerful formula targets and eliminates a wide range of weeds, including those pesky ones that often plague homeowners. I've personally used Roundup on my St. Augustine lawn, and the results have been nothing short of remarkable. The weeds started disappearing within days, and my lawn has never looked healthier.
The pre-mixed formula makes application a breeze. Simply attach it to your hose and start spraying. No more messy mixing or measuring required. Roundup is also formulated to be safe for use around desirable plants when applied according to the label instructions. However, it's always a good idea to test a small area first to ensure compatibility. I highly recommend Roundup for Lawns (Southern) to anyone looking to achieve a weed-free, lush St. Augustine lawn.
PROS
- Efficiently targets and eradicates broadleaf weeds without harming Augustine grass.
- Convenient single-dose packet design for easy application and precise mixing.
- Professional-grade formula provides long-lasting weed control results.
CONS
- May require multiple applications for persistent weeds.
- Follow application instructions carefully to avoid potential damage to desirable plants.
Celsius WG, with its targeted formula, effectively eliminates weeds without affecting the overall health of your Augustine grass. Its convenient packet design simplifies mixing and application, ensuring precise distribution. As a professional-grade solution, Celsius WG provides lasting control against a wide range of weeds, keeping your lawn pristine and weed-free.
While some persistent weeds may necessitate multiple treatments, Celsius WG's precision delivery minimizes the risk of damage to surrounding plants. By following application guidelines diligently, you can achieve optimal weed control without compromising the health of your lawn. Embracing Celsius WG in your lawn care regimen empowers you to maintain a thriving Augustine grass carpet, free from the nuisance of weeds.
PROS
- Effectively controls common southern weeds like dollarweed, clover, and crabgrass
- Fire ant preventer - eliminates mounds, protecting children and pets
- Exclusive All-in-One design - weed killer, fertilizer, and insect control in one easy step
- Advanced formula - uses Turf Builder Triple Action Technology for fast greening and lasting results
- Covers up to 8,000 sq. ft.
CONS
- May not be suitable for all grass types (check label for compatibility)
- Requires watering after application for optimal results (may not be ideal for drought-prone areas)
The Scotts Turf Builder Southern Triple Action is a powerful 3-in-1 solution for southern lawns. It effectively kills common weeds like dollarweed, clover, and crabgrass, while also preventing fire ants and fertilizing your lawn for a greener, healthier look. The easy-to-use formula is designed to work in just one step, saving you time and effort. With its advanced Turf Builder Triple Action Technology, you can expect fast greening and lasting results.
One of the key advantages of this product is its ability to control fire ants. This is especially important for families with children and pets, as fire ant mounds can be a nuisance and even pose a safety hazard. By eliminating these mounds, the Scotts Turf Builder Southern Triple Action helps to create a safer outdoor environment.
When battling weeds in your St. Augustine grass, choose a weed killer that caters specifically to this grass type. Our expert insights will assist you in selecting the perfect product, ensuring you can effectively tackle the problem while nurturing the health of your lawn. Whether you opt for a pre-emergent solution to prevent weed growth or a post-emergent treatment to eliminate existing weeds, we provide comprehensive guidance, helping you reclaim your weed-free, lush St. Augustine grass.
Frequently Asked Questions
What type of weed killer is best for St. Augustine grass?
For St. Augustine grass, selective weed killers that target broadleaf weeds without harming the grass are recommended. Post-emergent herbicides containing triclopyr or selective pre-emergent herbicides like prodiamine work effectively.
How often should I apply weed killer to my St. Augustine grass?
The frequency of weed killer application depends on the product and the severity of the weed problem. Typically, pre-emergent herbicides are applied once yearly before weed seeds germinate, while post-emergent herbicides may need to be applied every 4-6 weeks until weeds are controlled.
Can I use the same weed killer for my lawn and garden?
No, it's not advisable to use the same weed killer for your lawn and garden. Different plants have varying sensitivities to herbicides, so it's essential to select a product specifically designed for the intended area of application.
How do I prevent weeds from growing in my St. Augustine grass?
To prevent weeds in St. Augustine grass, consider using pre-emergent herbicides before weed seeds germinate. Maintaining a healthy lawn through proper watering, mowing, and fertilization also helps prevent weed growth by promoting vigorous grass growth.
What are the most common weeds that affect St. Augustine grass?
St. Augustine grass is prone to broadleaf weeds such as clover, dandelion, chickweed, and spurge. Crabgrass and other grassy weeds can also pose problems in certain regions.
