You’ve probably tried a few lawn treatments, but finding a single product that feeds your grass while eradicating weeds isn’t easy. The seven options below blend balanced nutrients with targeted herbicides, promising a greener, weed‑free yard without the hassle of separate applications. Each formula varies in nutrient ratios, weed spectrum, and grass compatibility, so you’ll need to match the right one to your lawn’s specific needs. Let’s explore how these combos differ and which might be the best fit for your turf.
| Scotts Turf Builder Triple Action Lawn Fertilizer (33.94 lb) |  | All‑Rounder | Form: Granular fertilizer‑weed control | Primary Function: Fertilize + weed control | Coverage Area: 12,000 sq ft per bag | VIEW LATEST PRICE | Read Our Analysis |
| Scotts Weed Control 14 lb 5,000 sq ft |  | Weed‑Specific | Form: Granular weed killer | Primary Function: Weed control only | Coverage Area: 5,000 sq ft per bag | VIEW LATEST PRICE | Read Our Analysis |
| BioAdvanced 5-in-1 Weed & Feed Granules 9.6 lb |  | 5‑in‑1 Power | Form: Granular weed‑feed | Primary Function: Fertilize + weed control | Coverage Area: 4,000 sq ft per bag | VIEW LATEST PRICE | Read Our Analysis |
| Sunday Weed & Green Lawns Sprayer 1,250 sq ft |  | Easy Sprayer | Form: Liquid spray | Primary Function: Weed control + lawn health | Coverage Area: 1,250 sq ft per bottle | VIEW LATEST PRICE | Read Our Analysis |
| Spectracide Weed & Feed 20-0-0 (3 Count) QuickFlip Sprayer |  | Quick‑Flip Convenience | Form: Liquid spray (QuickFlip) | Primary Function: Fertilize + weed control | Coverage Area: 7,500 sq ft per bottle | VIEW LATEST PRICE | Read Our Analysis |
| BioAdvanced All-In-One Lawn Weed and Crabgrass Killer I Concentrate 40 oz |  | Concentrated Control | Form: Concentrated liquid | Primary Function: Weed control + crabgrass kill | Coverage Area: 6,250 sq ft per bottle | VIEW LATEST PRICE | Read Our Analysis |
| Southern Ag Atrazine St. Augustine Weed Killer 32oz |  | St. Augustine Specialist | Form: Liquid herbicide | Primary Function: Weed control (St. Augustine) | Coverage Area: 3,720 sq ft per quart | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
Scotts Turf Builder Triple Action Lawn Fertilizer (33.94 lb)
If you need a single product that both feeds your lawn and tackles the most common weeds, Scotts Turf Builder Triple Action (33.94 lb) is the ideal choice. It delivers a 3‑in‑1 formula that fertilizes, kills dandelion, clover, dollarweed, ground ivy, chickweed, plantain, henbit, English daisy, and other listed weeds, while preventing crabgrass for four months. Use it on Bahiagrass, Centipedegrass, Kentucky Bluegrass, Perennial Ryegrass, Bermudagrass, Tall Fescue, Fine Fescue, and Zoysiagrass. Apply to a wet lawn with a Scotts spreader, water after 24 hours, and keep people and pets out until dust settles. One bag covers roughly 12,000 sq ft.
- Form:Granular fertilizer‑weed control
- Primary Function:Fertilize + weed control
- Coverage Area:12,000 sq ft per bag
- Application Method:Broadcast spreader
- Weed Types Targeted:Broadleaf + crabgrass
- Active Ingredients (Key):Not specified (proprietary blend)
- Additional Feature:4‑month crabgrass prevention
- Additional Feature:Feeds for thick, green lawns
- Additional Feature:Requires wet lawn application
Scotts Weed Control 14 lb 5,000 sq ft
Scotts Weed Control 14 lb is the ideal solution for homeowners who need fast, broad‑leaf weed elimination on a 5,000 sq ft lawn. You’ll spread it with a Scotts broadcast or rotary spreader set to 3 ¾, or a drop spreader set to 5 ¾. The granules act on contact, then travel to the root, killing over 200 weeds like dandelion, clover, and poison ivy. Apply in spring or early fall while weeds are active, then wait one to two days before watering thoroughly. Avoid using it on dichondra, carpetgrass, Floratam St. Augustinegrass, creeping bentgrass, or lawns with desirable clovers. This single 14‑lb bag covers exactly 5,000 sq ft.
- Form:Granular weed killer
- Primary Function:Weed control only
- Coverage Area:5,000 sq ft per bag
- Application Method:Broadcast spreader
- Weed Types Targeted:Broadleaf (200+ types)
- Active Ingredients (Key):Not specified (proprietary blend)
- Additional Feature:200+ weed types controlled
- Additional Feature:Specific spreader settings provided
- Additional Feature:Not for use on Dichondra
BioAdvanced 5-in-1 Weed & Feed Granules 9.6 lb
BioAdvanced’s 5‑in‑1 Weed & Feed Granules are the perfect solution for homeowners who want a single, hassle‑free product that both nourishes their lawn and eliminates stubborn weeds like dandelion, clover, and crabgrass. You’ll spread 9.6 lb over up to 4,000 sq ft in spring or early summer, even if weeds have already popped up. The dicamba‑quinclorac blend kills hard‑to‑control weeds and crabgrass within three days, then prevents new growth for six months. Meanwhile, it feeds your turf for three months, promoting thicker, greener grass. One application delivers both killer and feeder results, simplifying lawn care.
- Form:Granular weed‑feed
- Primary Function:Fertilize + weed control
- Coverage Area:4,000 sq ft per bag
- Application Method:Broadcast spreader
- Weed Types Targeted:Broadleaf + crabgrass (200+ types)
- Active Ingredients (Key):Dicamba, Quinclorac
- Additional Feature:6‑month crabgrass control
- Additional Feature:3‑day visible results
- Additional Feature:Feeds up to 3 months
Sunday Weed & Green Lawns Sprayer 1,250 sq ft
Homeowners who want a single, hassle‑free solution for both fertilizing and weed control will love the Sunday Weed & Green Lawns Sprayer, which delivers 32 oz of dual‑action formula that covers up to 1,250 sq ft. You’ll spray directly from the hose‑end attachment, no mixing required, and the chelated iron (FeHEDTA) kicks in fast, turning brown spots bright green. The pre‑emergent component stops crabgrass, broadleaf weeds, moss, algae, and lichen before they emerge, while the post‑emergent side kills existing invaders. It also suppresses dollar spot, rust, and snow mold, leaving a thicker, more vibrant lawn that’s safe for any turfgrass.
- Form:Liquid spray
- Primary Function:Weed control + lawn health
- Coverage Area:1,250 sq ft per bottle
- Application Method:Hose‑end sprayer
- Weed Types Targeted:Broadleaf, crabgrass, moss, algae, lichen
- Active Ingredients (Key):Chelated iron (FeHEDTA)
- Additional Feature:Dual‑action pre‑ and post‑emergent
- Additional Feature:Chelated iron for fast green‑up
- Additional Feature:Hose‑end sprayer included
Spectracide Weed & Feed 20-0-0 (3 Count) QuickFlip Sprayer
If you need a quick, all‑in‑one solution that both feeds your lawn and eliminates stubborn broadleaf weeds, the Spectracide Weed & Feed 20‑0‑0 3‑Count QuickFlip Sprayer is the perfect choice. Each 32‑oz bottle carries 20 % nitrogen, feeding grass while killing dandelion, chickweed, knotweed, plantain, clover, mallow, and purslane. The three‑pack includes a single nozzle, letting you connect the QuickFlip sprayer to a hose and treat up to 7,500 sq ft in about 20 minutes. Water the lawn a day or two before, avoid watering for 24 hours after, and don’t spray above 85°F. Spot‑treat persistent weeds within three weeks. Amazon offers a 30‑day return, and reviewers rate it 4.3 / 5.
- Form:Liquid spray (QuickFlip)
- Primary Function:Fertilize + weed control
- Coverage Area:7,500 sq ft per bottle
- Application Method:QuickFlip hose‑end sprayer
- Weed Types Targeted:Broadleaf (200+ types)
- Active Ingredients (Key):20‑0‑0 nitrogen (fertilizer) + unspecified herbicide
- Additional Feature:20‑minute application time
- Additional Feature:No‑mix, ready‑to‑spray bottles
- Additional Feature:Temperature limit 85°F
BioAdvanced All-In-One Lawn Weed and Crabgrass Killer I Concentrate 40 oz
The 40‑oz BioAdvanced All‑In‑One Lawn Weed and Crabgrass Killer I is the ideal solution for anyone who wants a single, fast‑acting product that tackles over 200 broadleaf weeds—including dandelion, clover, and crabgrass—without damaging the lawn. You’ll mix the concentrate to cover up to 6,250 sq ft, then apply it to rain‑proof grass types. Its blend of quinclorac, 2,4‑D dimethylamine salt, and dicamba penetrates roots, eradicating tough weeds down to the source. The formula works within an hour, letting you treat lawns quickly and safely. EPA registration 92564‑41 guarantees compliance and environmental oversight.
- Form:Concentrated liquid
- Primary Function:Weed control + crabgrass kill
- Coverage Area:6,250 sq ft per bottle
- Application Method:Spray applicator (diluted)
- Weed Types Targeted:Broadleaf + crabgrass (200+ types)
- Active Ingredients (Key):Quinclorac, 2,4‑D, Dicamba
- Additional Feature:Rainproof in one hour
- Additional Feature:Concentrated formula for targeted use
- Additional Feature:Covers 6,250 sq ft per bottle
Southern Ag Atrazine St. Augustine Weed Killer 32oz
Because it combines 4 % atrazine with a ready‑to‑use 32‑oz liquid, Southern Ag Atrazine St. Augustine Weed Killer is perfect for anyone who wants fast, reliable control of grassy and broadleaf weeds in St. Augustine or Centipede lawns without juggling multiple products. You’ll spray 4.33 oz per 500 sq ft, diluting in 2 gal of water to cover 1,000 sq ft, and treat up to 3,720 sq ft per quart. Apply early spring for best results, avoiding hose‑end sprayers and overlap. The 1‑quart, 4 % atrazine formula targets common weeds while preserving your lawn’s health, and its 4.3‑star rating reflects consistent performance.
- Form:Liquid herbicide
- Primary Function:Weed control (St. Augustine)
- Coverage Area:3,720 sq ft per quart
- Application Method:Sprayer (mixed with water)
- Weed Types Targeted:Broadleaf & grassy weeds in St. Augustine
- Active Ingredients (Key):Atrazine (4 %)
- Additional Feature:Specific to St. Augustine & Centipede grasses
- Additional Feature:4 % atrazine concentration
- Additional Feature:Not hose‑end sprayer compatible
Factors to Consider When Choosing Grass Fertilizer With Weed Killer
You should check the nutrient balance to make certain the fertilizer feeds your lawn while the herbicide tackles the weeds you face. Look at the weed‑spectrum coverage and guarantee it matches the species you need to control, and verify that the product is compatible with your grass type. Finally, consider the timing of application and the environmental impact to keep your yard healthy and sustainable.
Nutrient Balance
A well‑balanced N‑P‑K ratio is key to a thriving lawn that naturally resists weeds. When you pick a fertilizer with a weed‑killer, check the nitrogen level first. Too much N fuels fast, weak shoots that invite invaders, while slow‑release N keeps growth steady and discourages weed spikes. Phosphorus and potassium should be ample enough to strengthen roots, giving grass the anchorage it needs to outcompete weeds. Tailor the mix to your grass type, soil pH, and climate—sandy soils may demand more potassium, while clay soils hold nutrients longer. By matching the formula to these conditions, you create a resilient turf that stays dense, healthy, and less appealing to unwanted plants.
Weed Spectrum Coverage
Balancing N‑P‑K sets the stage, but the real test of a lawn’s resilience is how many weed types the fertilizer‑herbicide combo can tackle. When you scan a product label, check the weed list—broadleaf, grassy, sedges, and any specialty weeds you’ve seen. A wide spectrum means the formula uses multiple modes of action, so you won’t need separate treatments for each invader. Identify the weeds that dominate your yard; if crabgrass, dandelion, and nutsedge all appear, you need a combo that covers them all. Choosing a product with diverse coverage reduces gaps in control, keeps unwanted plants from rebounding, and extends the period between applications. In short, match the label’s weed roster to your lawn’s problem list for lasting, all-encompassing weed suppression.
Application Timing
When spring’s soil warms and weeds start to surge, that’s the ideal window to apply a grass fertilizer with weed killer. You’ll want to act as temperatures rise into the 60‑70 °F range, because that heat fuels both grass growth and the weeds you’re targeting. Avoid the hottest, driest days—stressful heat can diminish herbicide uptake and cause burn. After the initial spring dose, keep an eye on new weed sprouts; a mid‑season reapplication can curb fresh invasions without over‑fertilizing. Remember that timing can shift slightly depending on your lawn’s species, so match the schedule to when your grass is actively growing but not yet under heat stress. This approach maximizes nutrient delivery while keeping unwanted plants at bay.
Grass Type Compatibility
One key factor is matching the fertilizer‑herbicide blend to your lawn’s grass type, because each species tolerates herbicides differently. Warm‑season grasses such as Bermuda and St. Augustine often react poorly to selective herbicides, while cool‑season varieties like tall fescue are more forgiving. Bentgrass and other delicate types can discolor or thin when exposed to harsh blends, so you must verify the label’s compatibility list before buying. Check the product’s grass‑type recommendations and avoid formulas that list “not suitable” for your turf. Ignoring these guidelines can cause patchy, weakened grass, turning a well‑intended lawn care routine into costly damage. Choose a blend that aligns with your grass’s tolerance to protect both appearance and health.
Environmental Impact
Three key factors shape the environmental impact of a grass‑fertilizer‑with‑weed‑killer: the source of nutrients, the release rate of nitrogen, and the specificity of the herbicide. If you choose organic formulas, you’ll benefit from biodegradable ingredients that break down faster and leave fewer synthetic residues. Slow‑release nitrogen curbs leaching, keeping waterways cleaner and reducing algal blooms. Targeted herbicides spare beneficial insects and microbes, preserving soil health. Apply at the label‑recommended rate and timing to avoid excess buildup and runoff. Pair these choices with integrated pest management—mixing cultural, biological, and chemical tactics—to cut overall herbicide use. By watching these factors, you protect the lawn ecosystem while keeping your grass thriving.
Cost Effectiveness
If you compare coverage area, application rate, and price per treated square foot, you’ll quickly see which grass‑fertilizer‑with‑weed‑killer gives the best bang for your buck. Start by looking at bag size and concentration; larger or more concentrated products usually lower the cost per application. Next, calculate price per pound or ounce for each brand and match it to the square footage you need. Don’t forget to factor in long‑term benefits—extended weed control and richer lawn nutrition can offset a higher upfront price. Finally, consider total expenses: material cost, labor, and how often you’ll have to reapply. By weighing these numbers, you’ll choose a product that delivers both healthy turf and genuine cost‑effectiveness.
