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Best Weed And Feed For St Augustine Grass (2024 Updated)

If you’re looking for a lush and healthy St. Augustine grass lawn, weed and feed products are an effective solution for preventing weed growth and promoting grass growth. However, before purchasing a weed and feed product, it’s important to consider several factors.

Firstly, it’s essential to determine the type of St. Augustine grass you have in your lawn to ensure the product is appropriate for your specific grass variety. Additionally, consider the time of year and weather conditions, as certain products may cause damage to grass during extreme heat or cold. It’s also important to read the label carefully to ensure the product is safe for pets and wildlife in the area.

Are you tired of constantly pulling weeds or dealing with a patchy lawn? A quality weed and feed product can save you time and effort while maintaining a beautiful lawn. But, are you worried about harming the environment or putting your pets at risk? By researching the appropriate products and carefully reading the labels, you can ensure a healthy lawn without compromising the safety of those around you. So, whether you’re a landscaping professional or a homeowner seeking a solution for a beautiful lawn, investing in a weed and feed product can help you achieve your desired results.

10 Best Weed And Feed For St Augustine Grass

# Product Image Product Name Product Notes Check Price
1
The product is ideal for eliminating weeds and promoting healthy growth of St. Augustine grass.
2
It is an ideal weed and feed solution for southern lawns.
3
Ideal for controlling weeds and promoting healthy growth of St. Augustine grass with a balanced fertilizer.
4
Ideal for fertilizing and controlling weeds in Southern lawns.
5
The product is ideal for fertilizing and controlling weeds on lawns up to 5,000 square feet.
6
This product is ideal for eliminating weeds and preventing fire ants while fertilizing lawns in Southern regions.
7
The product is ideal for controlling weeds and promoting healthy growth of St. Augustine grass.
8
Ideal for repairing St. Augustine lawns with a ready-to-use mulch and fertilizer combination that covers up to 85 sq. ft.
9
This herbicide is ideal for killing weeds in St. Augustine lawns.
10
Southern Ag Atrazine St. Augustine Grass Weed Killer is ideal for controlling broadleaf weeds and grassy weeds in lawns.
The product is ideal for eliminating weeds and promoting healthy growth of St. Augustine grass.
It is an ideal weed and feed solution for southern lawns.
Ideal for controlling weeds and promoting healthy growth of St. Augustine grass with a balanced fertilizer.
Ideal for fertilizing and controlling weeds in Southern lawns.
The product is ideal for fertilizing and controlling weeds on lawns up to 5,000 square feet.
This product is ideal for eliminating weeds and preventing fire ants while fertilizing lawns in Southern regions.
The product is ideal for controlling weeds and promoting healthy growth of St. Augustine grass.
Ideal for repairing St. Augustine lawns with a ready-to-use mulch and fertilizer combination that covers up to 85 sq. ft.
Southern Ag Atrazine St. Augustine Grass Weed Killer is ideal for controlling broadleaf weeds and grassy weeds in lawns.

1. Lesco 50 Lb. St. Augustine Grass Weed And Feed With Penoxsulam

Achieve a lush and healthy St. Augustine turf with Lesco Professional's 50 LB, 13,00 SQFT, 17-0-17 Turf Fertilizer. This specially formulated fertilizer contains 30% Poly Coated Sulfur Coated Urea, which slowly releases nutrients over an extended period of time, providing up to 8 weeks of feeding.

For best results, apply the fertilizer when the turf is wet and allow it to dry. You can expect to see total results in just 2 weeks. Lesco Professional's St Augustine Turf Fertilizer is safe for Floratam variety and is specially designed to cater to the needs of St. Augustine grass.

This fertilizer is easy to use and its slow-release formula ensures that your St. Augustine turf stays healthy and vibrant for longer periods of time. Invest in Lesco Professional's St Augustine Turf Fertilizer for a lush and green lawn that you can be proud of.

Pros

  • Contains 30% Poly Coated Sulfur Coated Urea for slow-release of nutrients
  • Provides up to 8 weeks of feeding
  • Specially formulated for St. Augustine grass
  • Easy to use

Cons

  • – May take up to 2 weeks to see total results

2. Bioadvanced 3-In-1 Weed And Feed For Southern Lawns, Granules, 12.5 Lb

Maintain a lush and healthy lawn with Southern Lawns. This specially formulated product is designed to cater to the needs of southern turfs like Bermuda Grass, St Augustine Grass, Centipede Grass and Zoysia Grass. The weed killer in this product is effective against dandelion, dollar weed, clover, and other common weeds. With a 50% slow-release formula, it feeds your lawn and provides it with the necessary nutrients to stay green and strong. Additionally, it prevents broadleaf, grassy weeds, and crabgrass for up to 6 months, giving your lawn a long-lasting protection. You can use Southern Lawns without worrying about harming your lawn, as long as you follow the instructions correctly.

Say goodbye to unwanted weeds and hello to a healthy lawn with Southern Lawns. This product is a powerful weed killer that is designed to eliminate dandelion, dollar weed, clover, and other common weeds. At the same time, it feeds your lawn with essential nutrients to keep it green and strong. You can enjoy up to 6 months of protection against broadleaf, grassy weeds, and crabgrass, thanks to the product's special formulation. Plus, it is safe for use on southern turfs like Bermuda Grass, St Augustine Grass, Centipede Grass and Zoysia Grass, and won't cause any harm when used as directed.

Achieve a picture-perfect lawn with Southern Lawns. This product is specially designed for southern turfs like Bermuda Grass, St Augustine Grass, Centipede Grass and Zoysia Grass. It features a unique combination of weed killer and lawn fertilizer that effectively eliminates common weeds like dandelion, dollar weed, and clover, while feeding and strengthening your lawn. Its slow-release formula ensures that your lawn stays healthy and green for a long time. Additionally, it provides up to 6 months of protection against broadleaf, grassy weeds, and crabgrass, making it a must-have for lawn care enthusiasts. Southern Lawns is easy to use and won't harm your lawn when used as directed.

Pros

  • Specially formulated for southern turfs like Bermuda Grass, St Augustine Grass, Centipede Grass and Zoysia Grass
  • Effective weed killer that eliminates common weeds like dandelion, dollar weed, and clover
  • Feeds and strengthens your lawn with essential nutrients
  • Provides up to 6 months of protection against broadleaf, grassy weeds, and crabgrass
  • 50% slow-release formula ensures long-lasting results
  • Safe for use when used as directed

Cons

  • – May not be suitable for use on other types of grass

3. Fertilome (10917) St. Augustine Weed & Feed 15-0-4 (32 Lbs.)

This herbicide is a versatile solution for controlling both pre-emergent and post-emergent weeds. It is also a fertilizer mix with a 15-0-4 formula designed specifically for St. Augustine, Centipede, and Zoysia lawns. It works to keep the lawn healthy by preventing weed growth and providing essential nutrients. However, it is not recommended for use on Bermuda Grass or any other type of Northern grass.

To achieve the best results, it is recommended to apply the herbicide in early spring, which will provide long-lasting weed control and boost the overall health of the lawn. This product can cover an area of up to 5,000 square feet, and the application method varies based on the footage of the area. For more information on how to properly apply the product, refer to the label.

Pros

  • Controls both pre-emergent and post-emergent weeds
  • Fertilizer mix with 15-0-4 formula for St. Augustine, Centipede, and Zoysia lawns
  • Improves lawn health and provides essential nutrients
  • Long-lasting weed control
  • Covers up to 5,000 square feet

Cons

  • – Not recommended for use on Bermuda Grass or any other type of Northern grass
  • – Application method varies based on the footage of the area

4. Scotts Turf Builder Bonus S Southern Weed & Feed2, 17.24 Lbs.

The weed killer from this brand is a great solution for those looking to get rid of dollarweed, clover, and other listed lawn weeds. Not only does it kill the weeds, but it also feeds the grass which helps to crowd out future weeds. By building strong, deep roots, this product helps to strengthen the grass against heat and drought.

Please note that this product is not suitable for use on Bermudagrass lawns. It can only be used on St. Augustinegrass (including Floratam), centipede, zoysia, and carpetgrass lawns. This product is available in TX, FL (except Panhandle region), LA, AL, GA, MS, NC, and SC.

Pros

  • Kills dollarweed, clover, and other listed lawn weeds
  • Feeds grass to crowd out future weeds
  • Builds strong, deep roots to strengthen against heat and drought

Cons

  • – Not suitable for use on Bermudagrass lawns

5. Scotts Turf Builder Weed And Feed 3; Covers Up To 5,000 Sq. Ft., Fertilizer, 14.29 Lbs.

Scotts Turf Builder Weed and Feed3 is a powerful lawn care product designed to kill existing weeds and feed your lawn to thicken it up and prevent future weed growth. With the help of WeedGrip Technology, this weed and feed product targets and destroys over 50 different types of lawn weeds, including dandelion, clover, chicory, plantain, purslane, morningglory, and eveningprimrose.

One bag of Scotts Turf Builder Weed and Feed3 is enough to cover an area of 5,000 sq. ft. and can be applied to a variety of grass types, including Bahiagrass, Bermudagrass, Bluegrass, Centipedegrass, Fescue, Ryegrass, and Zoysiagrass. Please note that this product is not recommended for use on St. Augustinegrass (including Floratam), Dichondra, Lippia, Carpetgrass, and Bentgrass lawns.

Scotts Turf Builder Weed and Feed3 is an excellent choice for anyone looking to maintain a lush, weed-free lawn. It is easy to use and provides long-lasting results that will keep your lawn looking beautiful all season long.

Pros

  • Kills existing weeds and feeds your lawn to prevent future weed growth
  • Targets over 50 different types of lawn weeds
  • Utilizes WeedGrip Technology for maximum effectiveness
  • Can be applied to a variety of grass types
  • Easy to use and provides long-lasting results

Cons

  • – Not recommended for use on certain grass types such as St. Augustinegrass (including Floratam), Dichondra, Lippia, Carpetgrass, and Bentgrass lawns
  • – Not available in FL

6. Triple Threat Lawn Care Treatment

Scotts Turf Builder Southern Triple Action is the perfect three-in-one formula for Southern grasses that performs three essential functions that keep your lawn looking great. The formula effectively kills dollarweed and clover, eliminates and prevents fire ants and provides the necessary nutrients for your lawn to thrive.

This amazing formula is specially designed to kill the listed lawn weeds, including dollarweed, dandelion, clover, oxalis, plantain, chickweed, and henbit. This solution also provides six months of fire ant control while also controlling armyworms, fleas, mole crickets, chinch bugs, sod webworms, and ticks.

The Scotts Turf Builder Southern Triple Action not only protects your lawn from pests and weeds, but it also strengthens it against heat and drought, making it perfect for St. Augustinegrass (including Floratam), Centipedegrass, Zoysiagrass, and Carpetgrass. This solution is easy to apply using any Scotts spreader, and it is advisable to apply it when both the grass and weeds are actively growing. A 26.64 lb. bag of this product can cover up to 8,000 sq. ft. and is available in AL, AR, FL, GA, KS, LA, MO, MS, NC, NM, OK, SC, TX.

The Scotts Turf Builder Southern Triple Action is a must-have for any homeowner who wants to keep their lawn healthy and free from pests and weeds. This solution is highly effective in controlling pests and weeds while providing the necessary nutrients for your lawn to thrive.

Pros

  • Kills dollarweed, dandelion, clover, oxalis, plantain, chickweed, and henbit
  • Provides six months of fire ant control
  • Controls armyworms, fleas, mole crickets, chinch bugs, sod webworms, and ticks
  • Strengthens lawn against heat and drought
  • Easy to apply using any Scotts spreader
  • Covers up to 8,000 sq. ft.

Cons

  • – Only available in select states

7. St. Augustine Lawn Repair In A Bag.

Scotts EZ Patch Lawn Repair is a combination of mulch and fertilizer that repairs St. Augustinegrass quickly and efficiently. The product is designed to repair the grass 60% faster than the untreated control, and the results can be seen within 15 days of application (results may vary). The mulch used in this product absorbs 6 times its weight in water and expands to surround the seed in a moist protective layer. This layer helps the seed to grow faster and healthier. The fertilizer is formulated with exclusive controlled release technology that feeds the grass to promote growth and establishment of St. Augustinegrass.

This ready-to-use lawn repair mix is perfect for covering up to 85 sq. ft. in one go. It is easy to use and can be applied by anyone. The product does not contain any grass seed, so you don't have to worry about any foreign species growing in your lawn. This product is specially formulated to work with St. Augustinegrass and provides the necessary nutrients to promote the growth of the grass.

The Scotts EZ Patch Lawn Repair for St. Augustine Lawns is a great solution for repairing damaged lawns. It is easy to use and provides quick and efficient results. The product is specially designed to work with St. Augustinegrass and contains a combination of mulch and fertilizer that promotes healthy growth and establishment of the grass.

Pros

  • Combination of mulch and fertilizer promotes healthy growth of St. Augustinegrass
  • Results can be seen within 15 days of application
  • Mulch absorbs 6 times its weight in water to provide a moist protective layer for the seed
  • Fertilizer is formulated with exclusive controlled release technology to feed the grass
  • Ready-to-use lawn repair mix covers up to 85 sq. ft. in one go

Cons

  • – Does not contain grass seed

8. Southern Ag 006130 Atrazine St. Augustine Weed Killer 32oz Specialty Herbicide, Light Tan

Looking for a simple and effective solution to control weeds in your lawn? The XXX Weed Killer is an excellent choice that offers a powerful formula to eliminate unwanted weeds in St. Augustine and Centipede grasses. With just one quart, you can treat an impressive 3,720 sq ft of lawn, giving you great value for your money.

The XXX Weed Killer is specially formulated to target and eliminate weeds while keeping your lawn healthy and green. It is easy to apply and works quickly to deliver results that you can see in no time. With its powerful formula, this weed killer gets right to the root of the problem to ensure that the weeds do not return.

The package weight of the XXX Weed Killer is 1.021 kilograms, making it easy to handle and store. The package dimensions are 5.842 L x 19.177 H x 12.954 W (centimeters), making it a compact and convenient size that you can easily store in your garage or shed.

Pros

  • Powerful formula to eliminate weeds in St. Augustine and Centipede grasses
  • Covers an impressive 3,720 sq ft of lawn with just one quart
  • Easy to apply and works quickly to deliver visible results
  • Gets right to the root of the problem to prevent weeds from returning
  • Compact and convenient package size for easy storage

9. 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.

Pros

  • 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

Best Weed And Feed For St Augustine Grass FAQs

Can weed and feed harm St. Augustine grass?

Yes, weed and feed products can harm St. Augustine grass if not used properly. Weed and feed products contain herbicides that are designed to kill weeds, but they can also damage or kill St. Augustine grass if applied incorrectly. It is important to read and follow the instructions on the product label carefully.

If the product is applied too heavily or in the wrong season, it can cause damage to the grass. Applying weed and feed during hot and dry weather can also increase the risk of damage to the grass.

It is recommended to use a fertilizer specifically designed for St. Augustine grass and to apply it according to the recommended schedule. This will help to keep the grass healthy and strong, which will make it more resistant to weeds and other pests.

Overall, it is important to be cautious when using weed and feed products on St. Augustine grass to avoid any potential harm to the grass. Proper use and application can help to keep the grass healthy and vibrant.

How often should I apply weed and feed to my St. Augustine grass lawn?

It is recommended to apply weed and feed to St. Augustine grass lawn twice a year, in the spring and fall. However, the exact frequency may depend on the climate and growing conditions in your area. If you live in a warmer climate with longer growing seasons, you may need to apply weed and feed more frequently. On the other hand, if you live in a cooler climate with shorter growing seasons, one application per year may be sufficient. It is important to follow the instructions on the product label and not to overapply, as this can damage the grass. Additionally, it is important to ensure that the lawn is moist before and after application to ensure proper absorption of the product. Regular maintenance such as mowing, watering, and fertilizing can also help keep your St. Augustine grass healthy and weed-free.

What are some alternative methods for controlling weeds in St. Augustine grass besides using weed and feed?

There are various alternative methods for controlling weeds in St. Augustine grass that are environmentally friendly and effective. One method is to manually remove weeds by hand. This approach is time-consuming but can be effective for small areas. Another option is to use organic herbicides made from natural ingredients such as vinegar, citric acid, or clove oil. These herbicides target the weed's foliage and can be applied directly to the weed. However, they may require more frequent applications than traditional herbicides. Additionally, improving soil health through proper fertilization, watering, and aeration can help promote dense turf growth, which can outcompete weeds. Finally, using a pre-emergent herbicide before weed seeds germinate can be an effective preventive measure. It is important to read and follow all label instructions when using any herbicide, including organic options. By using alternative methods to weed and feed, homeowners can maintain a healthy lawn while minimizing the impact on the environment.

What are the active ingredients in weed and feed for St. Augustine grass?

Weed and feed products are commonly used to control unwanted weeds and promote healthy growth in lawns. When it comes to St. Augustine grass, there are various active ingredients that are commonly used in weed and feed products.

One of the most commonly used active ingredients is 2,4-D, which is known for effectively controlling broadleaf weeds. Other active ingredients that are often used in weed and feed products for St. Augustine grass include dicamba, mecoprop, and sulfentrazone. These active ingredients target different types of weeds and can help keep your lawn looking healthy and vibrant.

It's important to note that while weed and feed products can be effective, they can also be harmful if not used properly. Always follow the instructions on the packaging carefully, and consider consulting with a lawn care professional if you have any concerns or questions. With the right care and attention, your St. Augustine grass can thrive and look its best all year round.

What is the best time to apply weed and feed for St. Augustine grass?

The best time to apply weed and feed for St. Augustine grass is during its growing season. In most regions, the growing season for St. Augustine grass is from late spring to early fall. It is recommended to apply weed and feed during the early part of the growing season, around late spring or early summer, when the grass is actively growing and can absorb the nutrients and chemicals from the fertilizer.

It is important to follow the instructions on the product label and not to apply too much fertilizer or herbicide as this can damage the grass. It is also important to water the lawn after applying weed and feed to help the fertilizer penetrate the soil and prevent the herbicide from evaporating or being blown away.

It is best to avoid applying weed and feed during periods of drought or extreme heat as this can stress the grass and lead to damage. Additionally, it is important to avoid applying weed and feed during periods of heavy rain as this can cause the chemicals to runoff and potentially harm nearby plants and waterways.

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