Best Weed And Feed For St Augustine: Six Options Compared
A strong St. Augustine weed-and-feed choice pairs stated compatibility with a clear fertilizer analysis and weed-control directions, making it suitable for homeowners who want to feed turf and manage weeds in one application. Fertilome (13917) St.
Augustine Weed & Feed 15-0-4 is the clearest all-around match here: its listing explicitly names St. Augustine, describes pre- and post-emergent control, and gives coverage of 5,000 square feet.
LESCO 50 lb. St. Augustine Grass Weed and Feed with Penoxsulam offers a larger stated coverage area and is described as safe for Floratam.
Other options vary in how specifically they address this grass, how much area they cover, and what weed-control detail they provide. Check the product label for application timing, rates, and lawn-specific restrictions before use.
Fertilome 13917 St. Augustine Weed & Feed is the Best Overall choice because its listing explicitly names St. Augustine, combines a 15-0-4 fertilizer with pre- and post-emergent weed control, and covers 5,000 square feet.
LESCO 50 lb. St.
Augustine Weed and Feed is a strong alternative for a larger area, with 13,000 square feet of stated coverage and Floratam compatibility. Compare the grass restrictions and label instructions before applying either product; listed compatibility does not replace the directions on the package.
Our Top Picks
Best OverallFertilome 13917 St. Augustine Weed & Feed
Explicitly suited to St. Augustine, Centipede, and Zoysia; combines 15-0-4 fertilizer with pre- and post-emergent control and covers 5,000 square feet.
View on Amazon
Best Floratam FitLESCO St. Augustine Weed and Feed
Specifically formulated for St. Augustine and listed as safe for Floratam; its 17-0-17 formula covers 13,000 square feet and feeds for up to eight weeks.
View on Amazon
Broadleaf Weed ControlJonathan Green Veri-Green Southern Weed and Feed
Designed for Southern lawns, including St. Augustine, and lists control of over 40 broadleaf weeds; stated coverage is 5,000 square feet.
View on Amazon- Longest Feeding Period Jonathan Green Green-Up Weed & Feed
Compare the Weed and Feed Options
| # | Product | Weight | Form | Buy |
|---|---|---|---|---|
| 1 | 1. Fertilome 13917 St. Augustine Weed & FeedBest Overall | 25.6 lb | Granules | View on Amazon |
| 2 | 2. LESCO St. Augustine Weed and FeedBest Floratam Fit | 50 lb | Granules | View on Amazon |
| 3 | 3. Jonathan Green Veri-Green Southern Weed and FeedBroadleaf Weed Control | 11.5 lb | Granule | View on Amazon |
| 4 |  4. Fertilome St. Augustine Weed and FeedMoist-lawn early-spring application | 17 lb | item form | View on Amazon |
| 5 |  5. Jonathan Green Green-Up Weed & FeedLongest Feeding Period | 4.54 g | Granule | View on Amazon |
| 6 |  6. LESCO Fertilizer Plus Herbicide 18-2-3Large-area dual-action lawn care | 50 lb | Granule | View on Amazon |
Detailed Reviews: Best Weed And Feed For St Augustine
#1 · Best Overall
1. Fertilome 13917 St. Augustine Weed & Feed
- Weight: 25.6 lb
- Form: Granules
Best for: Early-spring St. Augustine weed control.
Why it ranks #1: Explicitly suited to St. Augustine, Centipede, and Zoysia; combines 15-0-4 fertilizer with pre- and post-emergent control and covers 5,000 square feet.
Pre- and post-emergent weed control paired with a 15-0-4 fertilizer mix gives this Fertilome granule a two-part role: it addresses existing weeds while helping feed eligible turf. The 25.6-pound product covers 5,000 square feet, making it a defined-coverage option for St. Augustine, Centipede, and Zoysia lawns.
The label calls for early-spring application, which can put weed defense and feeding into the lawn-care schedule at the start of the season. Its pre- and post-emergent herbicide addresses weeds at different stages, while the 15-0-4 mix supplies fertilizer alongside that control. Coverage is 5,000 square feet, so homeowners can relate the bag to a specific lawn area; application amounts vary by footage, and the label provides the instructions.
- Combines pre- and post-emergent weed control
- Includes a 15-0-4 fertilizer mix
- For St. Augustine, Centipede, and Zoysia lawns
- Covers 5,000 square feet
- Not for Bermuda grass or Northern grass types.
Skip it if you have Bermuda grass or a Northern grass lawn; the label explicitly excludes those turf types.
A fit for homeowners with St. Augustine, Centipede, or Zoysia who want fertilizer and weed control in one early-spring granule application. Check that your turf is eligible, and use the label’s footage-based directions.
Full product details
| Brand | ferti-lome |
|---|---|
| Included Components | Fertilome (13917) St. Augustine Weed & Feed 15-0-4 (25.6 lbs.) |
| Item Form | Granules |
| Item Weight | 25.6 pounds |
| Manufacturer | VOLUNTARY PURCHASING GROUP |
| Model Number | 13917 |
| Warranty Description | Warranty |
Listed on Amazon as: Fertilome (13917) St. Augustine Weed & Feed 15-0-4, 25.6 lbs
View on Amazon#2 · Best Floratam Fit
2. LESCO St. Augustine Weed and Feed
- Weight: 50 lb
- Form: Granules
Best for: Floratam and extended feeding.
Why it ranks #2: Specifically formulated for St. Augustine and listed as safe for Floratam; its 17-0-17 formula covers 13,000 square feet and feeds for up to eight weeks.
Up to eight weeks of slow-release feeding is the defining feature of this LESCO granule, helping reduce how often fertilizer needs to be applied. Its 17-0-17 formula is specified for St. Augustine grass and is listed as safe for Floratam, an important fit detail for homeowners with that variety.
The 50-pound bag covers 13,000 square feet, giving buyers a clear area to compare with their lawn before planning application. Its 30% poly-coated sulfur-coated urea supports slow-release feeding for up to eight weeks, while the 17-0-17 analysis pairs that feeding with the St. Augustine-specific formulation. The stated workflow is to apply when turf is wet, allow it to dry, and expect total results in two weeks.
- Formulated specifically for St. Augustine grass
- Listed as safe for Floratam variety
- Slow-release feeding for up to eight weeks
- 50-pound bag covers 13,000 square feet
- Application is specified for wet turf, adding a moisture-dependent step.
Skip it if you want a product labeled for Centipede or Zoysia too; Fertilome St. Augustine Weed & Feed lists those grasses.
Consider it if you have St. Augustine, especially Floratam, and value a stated feeding period of up to eight weeks. Its wet-turf application instruction and 13,000-square-foot coverage are key planning considerations.
Full product details
| Brand | LESCO |
|---|---|
| Item Form | Granules |
| Item Weight | 50 pounds |
| Manufacturer | Lesco |
| Model Number | 090999 |
Listed on Amazon as: LESCO 50 lb. St. Augustine Grass Weed and Feed with Penoxsulam
View on Amazon#3 · Broadleaf Weed Control
3. Jonathan Green Veri-Green Southern Weed and Feed
- Weight: 11.5 lb
- Form: Granule
Best for: Southern lawns with broadleaf weeds.
Why it ranks #3: Designed for Southern lawns, including St. Augustine, and lists control of over 40 broadleaf weeds; stated coverage is 5,000 square feet.
Control of more than 40 broadleaf weeds gives Jonathan Green Veri-Green Southern Weed and Feed a wide target list for troublesome lawn weeds. Its formulation is tailored to Southern climates and soil conditions, and it names St. Augustine among the warm-season grasses for which it is suitable when used as directed.
The product lists dollarweed, dandelion, white clover, spotted spurge, and henbit among its targets, helping buyers assess whether its weed-control focus matches their lawn. It is intended for actively growing weeds in spring or fall, so timing can follow those growth periods. The stated warm-season grass compatibility includes St. Augustine, Bermudagrass, Zoysiagrass, and Centipede; the title gives coverage as 5,000 square feet.
- Tailored for Southern climates and soil conditions
- Suitable for St. Augustine when used as directed
- Controls over 40 broadleaf weeds
- Targets weeds during spring or fall active growth
- The stated weed-control target is broadleaf weeds, not every weed category.
Skip it if you need a formula explicitly described for crabgrass control; Jonathan Green Green-Up Weed & Feed lists crabgrass among its targets.
A practical match for Southern-lawn owners with St. Augustine and actively growing broadleaf weeds, particularly when spring or fall treatment fits their schedule. Its stated coverage is 5,000 square feet, and directions should guide use.
Full product details
| Brand | Jonathan Green |
|---|---|
| Included Components | Veri-Green Southern Weed & Feed |
| Item Form | Granule |
| Item Weight | 11.5 pounds |
| Manufacturer | Jonathan Green |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Listed on Amazon as: Jonathan Green Veri-Green Southern Weed and Feed Fertilizer – 5,000 Sq Ft
View on Amazon#4
4. Fertilome St. Augustine Weed and Feed
- Weight: 17 lb
- Form: item form
Best for: Moist-lawn early-spring application.
Why it ranks #4: Names St. Augustine among its intended grasses and describes pre- and post-emergent control; directions call for a moist lawn and watering after application.
The application sequence is the most useful detail here: apply in early spring when the lawn is moist, then water the product in well. Fertilome specifies this weed-and-feed for St. Augustine, Centipede, and Zoysia lawns, with control aimed at both pre-emerged and post-emerged weeds.
For homeowners planning seasonal lawn care, the early-spring timing and moist-lawn direction provide a defined application window and starting condition. The product is described as controlling both pre-emerged and post-emerged weeds in the named grass types, while the follow-up instruction to water in well is an additional step to include in the routine. The listing gives a 17-pound item weight but does not state a coverage area.
- For St. Augustine, Centipede, and Zoysia lawns
- Targets pre-emerged and post-emerged weeds
- Application is specified for early spring
- Directions call for a moist lawn and watering in well
- Requires a moist lawn before application and watering in afterward.
Skip it if you need a stated coverage area to plan treatment; this listing provides no square-foot coverage figure.
This suits owners of St. Augustine, Centipede, or Zoysia who can apply in early spring and follow the moist-lawn and watering directions. The listing does not give a coverage area, so that planning detail remains unspecified.
Full product details
| Brand | ferti-lome |
|---|---|
| Item Form | item_form |
| Item Weight | 17 pounds |
| Manufacturer | VOLUNTARY PURCHASING GROUPS IN |
| Model Number | 10915 |
| Additional Information | Important information Directions Apply in early spring to obtain control of pre-emerged and post-emerged weeds in Centipede, Zoysia and St. Augustine lawns. For best results, lawn should be moist prior to application. After application, water in well. |
Listed on Amazon as: Fertilome St. Augustine Weed and Feed 15-0-4
View on Amazon#5 · Longest Feeding Period
5. Jonathan Green Green-Up Weed & Feed
- Weight: 4.54 g
- Form: Granule
Best for: Broad weed targets and long feeding.
Why it ranks #5: Its 21-0-3 formula feeds for up to three months and controls over 250 broadleaf weeds, but the listing does not specifically establish St. Augustine compatibility.
Control of more than 250 broadleaf weeds is the defining draw of Jonathan Green Green-Up Weed & Feed, with listed targets including dandelions, chickweed, clover, wild onions, and thistle. Its 21-0-3 fertilizer feeds gradually for up to three months, combining a broad weed list with extended feeding.
The product is intended for application when weeds are actively growing, using a rotary, drop, or handheld spreader, so buyers can match the method to their available equipment. Its gradual nutrient release lasts up to three months, reducing the need to repeat fertilizer applications as frequently. The listing also states that it cannot be used at the same time as seeding a new lawn, a scheduling boundary for renovation plans.
- Controls over 250 broadleaf weeds
- 21-0-3 fertilizer analysis
- Gradual feeding for up to three months
- Can be applied with rotary, drop, or handheld spreaders
- Cannot be used at the same time as seeding a new lawn.
Skip it if you are seeding a new lawn now; the product cannot be applied at the same time as seeding.
A fit for lawn owners prioritizing a long feeding interval and a broad list of broadleaf targets, provided weeds are actively growing. Keep it separate from new-lawn seeding, and choose a listed spreader method.
Full product details
| Brand | Jonathan Green |
|---|---|
| Included Components | Weed & Feed |
| Item Form | Granule |
| Item Weight | 4.54 g |
| Manufacturer | Jonathan Green |
| Model Number | 12344 |
Listed on Amazon as: Jonathan Green (12344) Green-Up Weed & Feed – 21-0-3 Grass Fertilizer & Weed Killer (5,000 Sq. Ft.)
View on Amazon#6
6. LESCO Fertilizer Plus Herbicide 18-2-3
- Weight: 50 lb
- Form: Granule
Best for: Large-area dual-action lawn care.
Why it ranks #6: Offers an 18-2-3 fertilizer and broadleaf weed control, but its supplied details do not identify St. Augustine compatibility or a coverage figure.
An 18-2-3 fertilizer and herbicide combination gives this 50-pound LESCO granule a dual-action role: feeding turf while targeting common broadleaf weeds. Its 30% PolyPlus OPTI45 45 slow-release nitrogen is a specific part of the formula, distinguishing its nutrient approach from a basic fertilizer-and-herbicide pairing.
The 18-2-3 analysis supplies the stated nutrient ratio for grass growth and development, while the herbicide targets various common broadleaf weeds. Together, those functions let a buyer combine feeding and weed control in one product. The listing says it can be applied using a broadcast or rotary spreader, offering two equipment options, and its 50-pound weight may matter when handling and storing the granule bag.
- Combines fertilizer and herbicide in one granule
- 18-2-3 NPK formula
- Contains 30% PolyPlus OPTI45 45 slow-release nitrogen
- Lists broadcast or rotary spreader application
- Weed control is described for broadleaf weeds, not other weed categories.
Skip it if you need a product whose listed targets include more than 40 named broadleaf weeds; Jonathan Green Veri-Green Southern Weed and Feed specifies that scope.
Consider it if you want a large 50-pound granule product combining 18-2-3 fertilizer with broadleaf weed control and have a broadcast or rotary spreader. The listing does not specify St. Augustine compatibility, so check its label before use.
Full product details
| Brand | Lawn Synergy |
|---|---|
| Included Components | bag |
| Item Form | Granule |
| Item Weight | 50 pounds |
| Manufacturer | LESCO |
| Model Number | 080311 |
| Additional Information | Important information Ingredients Dimethylamine Salt of 2,4-Dichlorophenoxyacetic Acid. DERIVED FROM: Polymer Coated Urea, Urea, Monoammonium Phosphate, Sulfate of Potash. |
Listed on Amazon as: Lesco Fertilizer Plus Herbicide, Weed and Feed, 18-2-3
View on AmazonAvoid a grass-compatibility mismatch
The main compatibility trap is assuming that every weed-and-feed product is safe for every lawn grass. Fertilome 13917 names St. Augustine, Centipede, and Zoysia, and its listing specifically says not to use it on Bermuda or Northern grasses.
Jonathan Green Veri-Green Southern Weed and Feed lists St. Augustine alongside Bermudagrass, Zoysiagrass, and Centipede when used as directed.
By contrast, the supplied details for Jonathan Green Green-Up Weed & Feed and LESCO Fertilizer Plus Herbicide 18-2-3 do not establish St. Augustine compatibility, so their general weed-control claims are not enough to confirm a fit. Check the package label for the exact turf type and restrictions before spreading.
This matters especially when a yard contains mixed grass, recently established turf, or an uncertain variety: the product name alone cannot settle compatibility.
Match the bag coverage to the lawn area
A coverage mismatch can leave part of the lawn untreated or encourage an application rate that differs from the label. Among these products, Fertilome 13917 states coverage of 5,000 square feet, while LESCO St. Augustine Weed and Feed lists 13,000 square feet.
Jonathan Green Veri-Green Southern Weed and Feed also lists 5,000 square feet. The Fertilome 17-pound listing does not provide a coverage figure in the supplied details, so do not assume it matches the 25.6-pound Fertilome bag.
Measure the area you plan to treat and use the package’s stated spread rate rather than estimating from bag weight. Larger coverage is useful for a broad lawn only if the product is compatible with its grass and the label’s application directions suit the site.
How to Choose St. Augustine Weed and Feed
St. Augustine compatibility
Look first for an explicit statement that the formula is suitable for St. Augustine, then check restrictions for your other grass types. Fertilome 13917 lists St.
Augustine, Centipede, and Zoysia, while warning against use on Bermuda or Northern grasses. LESCO St.
Augustine Weed and Feed is specifically for St. Augustine and says it is safe for the Floratam variety. Jonathan Green Veri-Green Southern Weed and Feed lists St.
Augustine among warm-season grasses when used as directed. That makes these options easier to assess for a confirmed St.
Augustine lawn. The Jonathan Green Green-Up and Lawn Synergy LESCO fertilizer listings provide no specific St. Augustine confirmation in the supplied details, so buyers of those products should verify the package label before considering them.
Coverage and package size
Choose a product whose labeled coverage matches the area you need to treat, rather than choosing by bag weight alone. LESCO St. Augustine Weed and Feed lists 13,000 square feet from a 50-pound bag; Fertilome 13917 lists 5,000 square feet from a 25.6-pound bag, and Jonathan Green Veri-Green lists 5,000 square feet.
The other listings do not provide comparable coverage figures in the supplied data. A large lawn may make the LESCO coverage figure convenient, while a smaller treatment area may be easier to plan around a 5,000-square-foot product.
Measure the lawn and follow the label’s application rate; these figures are not interchangeable proof of how much product your lawn needs.
Fertilizer analysis and weed claims
Compare both the listed NPK analysis and the specific weed-control information, since the products do not describe the same strengths. Fertilome 13917 has a 15-0-4 analysis and states pre- and post-emergent weed control. LESCO St.
Augustine Weed and Feed lists 17-0-17 and up to eight weeks of feeding. Jonathan Green Veri-Green is described as controlling over 40 broadleaf weeds, while Green-Up lists over 250 broadleaf weeds and feeding for up to three months.
These claims are not directly comparable measures of performance, but they clarify what each listing emphasizes. Buyers prioritizing an explicitly St. Augustine-compatible weed-and-feed should favor a product with that stated fit; buyers focused on a particular weed should check the label to confirm it is covered.
Which weed and feed should you choose for St. Augustine?
For a clearly identified St. Augustine lawn, choose Fertilome 13917 St. Augustine Weed & Feed for its stated grass fit, 15-0-4 analysis, combined pre- and post-emergent control, and 5,000-square-foot coverage.
If you have a larger lawn or Floratam, consider LESCO St. Augustine Weed and Feed, which lists 13,000-square-foot coverage and says it is safe for Floratam.
For a Southern lawn where the listing’s stated control of over 40 broadleaf weeds is appealing, Jonathan Green Veri-Green Southern Weed and Feed is a compatible option when used as directed. Fertilome St. Augustine Weed and Feed is another named fit, though its listing gives less detail.
Treat the Green-Up and Lawn Synergy products as unconfirmed for St. Augustine until their labels verify compatibility.
Related Buying Guides
- Best Weed Killer For St Augustine Grass
- Best Fertilizer For St Augustine Grass
- Best Weed And Feed For Lawns
Frequently Asked Questions
When is the best time to apply weed and feed to St. Augustine grass?
The best timing depends on the specific product label, which provides application directions for that formula. Check that the label permits use on St. Augustine and follow its timing and weather guidance.
If the package does not confirm grass compatibility, do not assume the product is suitable.
Should St. Augustine grass be wet or dry when applying weed and feed?
Follow the package directions for whether the lawn should be wet or dry; application requirements can vary by product. Check the label before spreading, and do not substitute directions from another weed and feed. If the instructions are unclear, contact the manufacturer before applying it to your lawn.
Can St. Augustine grass be damaged by weed and feed if it is applied incorrectly?
Yes. Applying a product to grass that is not listed as compatible, or ignoring its application directions, can risk lawn injury. Check the package for St.
Augustine compatibility, rates, and restrictions before use. A listing that names a grass type does not replace following the full label.
Which option lists Floratam compatibility?
LESCO St. Augustine Weed and Feed lists Floratam compatibility and states coverage of 13,000 square feet. Treat that as a reason to consider it, not as a substitute for checking the package.
Verify the current label’s grass restrictions and application directions before using it.
How should I compare products for a larger lawn?
Compare the coverage stated in each listing with the area you need to treat, then confirm application directions and grass compatibility on the package. LESCO lists 13,000 square feet of coverage, while Fertilome 13917 lists 5,000 square feet. Coverage alone does not determine which product fits your lawn.
Final Words
For a clearly identified St. Augustine lawn, Fertilome 13917 is the strongest fit in this roundup: its listing names the grass, gives a 15-0-4 analysis, and states combined pre- and post-emergent control with 5,000-square-foot coverage. Consider LESCO for a larger area or Floratam.
Before choosing any option, verify grass compatibility and follow the package directions; treat Green-Up and Lawn Synergy as unconfirmed for St. Augustine unless their labels verify it.
