Crabgrass wins when your turf is thin and underfed, which is why the Best Fertilizer Numbers for Crabgrass: Top Products for a Lush Lawn conversation always circles back to nitrogen. Higher-nitrogen ratios such as 20-0-10 push vigorous blade and root growth, and a dense stand simply leaves crabgrass seed nowhere to establish. The numbers on the bag matter more than the marketing on the front.
Our top pick is the Scotts Turf Builder WinterGuard Fall Weed & Feed3, which pairs a fall fertilizer charge with an active weed killer in one 4,000 sq. ft. pass. Below you will find four more options, including a professional-grade pre-emergent and two straight feeds, so you can match the product to whether you are preventing crabgrass or crowding it out.
Comparison Chart of Best Fertilizer Numbers for Crabgrass: Top Products for a Lush Lawn
| Product | Details | Rating | Buy |
|---|---|---|---|
|
Editor’s Choice
|
Scotts Turf Builder Winterguard Fall Weed & Feed3 |
★★★★☆4.8/5 |
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|
Top Pick
|
Scotts Turf Builder Winterguard Fall Lawn Fertilizer |
★★★★☆4.5/5 |
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|
Best Budget
|
The Andersons Barricade Professional-grade Granular… |
★★★★☆4.7/5 |
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|
Scotts Green Max Lawn Food |
★★★★☆4.4/5 |
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|
Scotts Turf Builder Lawn Food |
★★★★☆4.4/5 |
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List of Top 5 Best Fertilizer Numbers for Crabgrass: Top Products for a Lush Lawn
Selection came down to three things: nitrogen-forward nutrition that thickens turf, coverage that suits typical residential lots, and a granular format that spreads evenly. Products with a documented weed-control component were weighted higher, since crabgrass management is part prevention and part competition. Anything that could not be applied cleanly with a standard broadcast spreader was left out.
Below are the list of products:
1. Scotts Turf Builder Winterguard Fall Weed & Feed3
Why it made the list
This is the only product on the list that attacks weeds and feeds the lawn in the same application, which is exactly the dual job crabgrass management demands. The fall fertilizer component builds winter resilience while the herbicide reduces competition from established broadleaf weeds. Buyer feedback consistently points to the convenience of collapsing two chores into one spreader pass.
Key specs
- Coverage: up to 4,000 sq. ft. per bag
- Bag weight: 11.43 lbs.
- Format: granular, spreader-applied
- Function: dual-action weed killer plus fall fertilizer
- Season: formulated for fall application
- Application method: standard broadcast or drop spreader
Real-world experience
Homeowners report that the dual-action formula shines in autumn, when the lawn is stockpiling reserves for winter and weeds are actively pulling nutrients away. Application is straightforward with a spreader, and the granules distribute evenly enough that streaking is rarely mentioned. The recurring caution is drift near ornamental beds, since the herbicide component can damage delicate plantings. Some lawns with heavy weed pressure need more than one application before the difference is obvious, and pairing the feed with a properly calibrated spreader makes that repeat pass far more consistent.
- Dual-action formula kills weeds and feeds turf, so one pass replaces two products
- Covers 4,000 sq. ft. per bag, enough for most standard suburban front and back lawns
- Fall fertilizer charge builds lawn resilience heading into winter dormancy
- Granular format applies cleanly with any standard spreader
- Heavy weed pressure often needs multiple applications, stretching the timeline
- Can harm flower beds if granules drift, so edges need careful spreader control
- Does not control every weed species, leaving some gaps in mixed-weed lawns
- ✔ Your lawn is around 4,000 sq. ft. or smaller
- ✔ You want weed control and feeding in one trip
- ✔ You are treating in fall before winter sets in
- ✖ Your turf runs right up against dense flower beds
- ✖ You only want nutrition with no herbicide at all
This beats the other four picks whenever you have both a weed problem and a thin lawn, because nothing else here does both jobs in a single application. It loses ground against the Andersons Barricade if your goal is stopping crabgrass seed before it ever germinates, since this is a feed-plus-killer rather than a true pre-emergent. Choose it for the fall clean-up pass, not the early-spring prevention window.
2. Scotts Turf Builder Winterguard Fall Lawn Fertilizer
Why it made the list
This is the herbicide-free sibling of our top pick, and it earns its place for anyone who wants the fall nutrition without any weed-killing chemistry near their beds. It works across all grass types, which removes the guesswork for homeowners who inherited a mixed-species lawn. The strategy here is pure competition: feed the turf hard enough and crabgrass loses its foothold.
Key specs
- Coverage: up to 4,000 sq. ft. per bag
- Bag weight: 10 lbs.
- Compatibility: all grass types
- Season: fall application, winter preparation
- Format: granular, easy spreader application
- Function: nutrition only, no herbicide component
Key note on grass types
The all-grass-type compatibility matters more than it sounds. Cool-season and warm-season lawns respond differently to autumn nitrogen, and a product that hedges across both saves you from having to identify your species first.
Real-world experience
Buyers describe this as the low-drama option in the WinterGuard family. Because there is no weed killer in the bag, there is no anxiety about overspray damaging perennials or shrub borders, which is the single most common complaint attached to weed-and-feed products. Owners note the same multi-application pattern as other fall feeds, and it is not the product to reach for in peak summer. If your goal is deeper colour across the whole yard, the fall feeding window is where the groundwork actually gets laid.
- Works on all grass types, so no species identification is required first
- Covers 4,000 sq. ft. from a 10 lbs. bag, keeping handling weight low
- Essential nutrients build resilience against harsh winter conditions
- No herbicide in the mix, so nearby beds and borders stay safe
- Optimal results may take multiple applications, so one bag rarely finishes the job
- Not suitable for immediate summer use, limiting it to the autumn window
- Carries a premium tier position against generic bagged fertilizers
- ✔ You want fall nutrition without any herbicide
- ✔ Your lawn is a mix of unidentified grass types
- ✔ You are prepping turf to survive a hard winter
- ✖ You need active weed killing in the same bag
- ✖ You are shopping for a mid-summer feeding
Pick this over the Weed & Feed3 when your lawn borders flower beds, vegetable plots or young shrubs and you cannot risk herbicide contact. It also suits gardeners who prefer to time weed control separately from feeding rather than bundling both into one date. It is the weaker choice if crabgrass is already visible, because nutrition alone will not remove what has already established.
3. The Andersons Barricade Professional-grade Granular Pre-emergent Weed Control
Why it made the list
This is the only true pre-emergent on the list, meaning it stops crabgrass at the germination stage rather than fighting it after it appears. Its 5,800 sq. ft. coverage is the largest here, which is why it lands as the budget-friendly pick on a per-area basis. Professionals and serious hobbyists both rate it highly, and that overlap is unusual for a consumer-available product.
Key specs
- Coverage: up to 5,800 sq. ft. per bag
- Bag weight: 18 lbs.
- Type: professional-grade granular pre-emergent
- Action: prevents weeds before germination
- Use: suitable for residential and commercial properties
- Duration: long-lasting seasonal protection
Real-world experience
The granular formulation is what makes this practical for homeowners rather than just crews, since it drops through a spreader with the same routine as any fertilizer. Users emphasise that timing decides everything: apply before soil temperatures allow crabgrass seed to germinate and the barrier holds; apply late and the window is gone. Extremely wet conditions can dilute its effectiveness, and it is not appropriate for every grass species, so checking the label against your turf is essential. The USDA and local extension services publish regional germination timing that is worth consulting before you open the bag, and moving 18 lbs. of granules evenly is far easier with a walk-behind unit built for volume.
- Covers up to 5,800 sq. ft., the widest reach on this list per bag
- Stops a wide variety of weeds before they germinate, not after
- Professional-grade formulation trusted on commercial as well as residential turf
- Long-lasting protection means fewer trips across the lawn each season
- Not suitable for all grass types, so label checking is mandatory before use
- Less effective in extremely wet conditions, which complicates spring timing
- Contains no fertilizer, so it does nothing to thicken existing turf
- ✔ Crabgrass returns to the same spots every year
- ✔ You have a large lot up to 5,800 sq. ft.
- ✔ You can apply before spring germination begins
- ✖ Crabgrass has already sprouted across the lawn
- ✖ You also need nutrition from the same bag
This is the strongest crabgrass-specific product on the list because it works at the germination stage, where the battle is actually cheapest to win. Pair it with one of the Scotts feeds rather than treating it as a replacement, since it delivers no nutrients of its own. If your application window has already passed and crabgrass is up, this bag will not help you this season.
4. Scotts Green Max Lawn Food
Why it made the list
The added iron supplement separates this from every other feed here, delivering colour response that buyers report within a few days rather than weeks. Faster greening translates to faster canopy density, and density is what physically denies crabgrass seed the light it needs. At 5,000 sq. ft. of coverage it suits medium to large lawns without needing a second bag.
Key specs
- Coverage: up to 5,000 sq. ft. per bag
- Bag weight: 16.67 lbs.
- Additive: iron supplement for deeper green colour
- Application: broadcast spreader
- Response time: visible colour change within a few days
- Benefit: strengthens grass against environmental stressors
Real-world experience
The most repeated observation is speed. Users notice a measurable shift in lawn colour within days of application, which makes this the product of choice when you need results before an event or at the start of the season. The iron does more than cosmetic work, reportedly helping grass hold up under harsh weather. The trade-off is potency: some grass types find it too strong, and over-fertilization is a real risk if you ignore the rate on the bag, so getting the colour right is about restraint as much as product choice.
- Iron supplement drives visible colour change within a few days of application
- Covers 5,000 sq. ft., handling medium to large lawns from one bag
- Strengthens grass against environmental stressors in harsh-weather regions
- Broadcast spreader application delivers professional-looking results with little effort
- Some grass types find the formula too strong, risking damage on sensitive turf
- Over-fertilization is easy if instructions are not followed to the letter
- Needs regular reapplication to hold results through the season
- ✔ You want colour improvement in days, not weeks
- ✔ Your lawn runs toward the 5,000 sq. ft. mark
- ✔ Harsh weather regularly stresses your turf
- ✖ Your grass type reacts badly to strong formulas
- ✖ You tend to eyeball rates instead of measuring
Choose this when appearance is the priority and you want the fastest visible turnaround of anything on this list, thanks to the iron. It is the wrong pick if you need weed control, because it offers none, and it demands more discipline with application rates than the gentler Turf Builder options. Cautious applicators with sensitive grass should step down to product five instead.
5. Scotts Turf Builder Lawn Food
Why it made the list
This is the all-purpose baseline feed from The Scotts Company LLC, and it earns inclusion for being the least fussy option across grass types and seasons. Its nutrient blend targets growth and colour while making turf more resilient against pests and disease. For a homeowner who just wants a thicker stand that shades out crabgrass, this is the straightforward starting point.
Key specs
- Coverage: up to 5,000 sq. ft. per bag
- Bag weight: 12.5 lbs.
- Compatibility: all grass types
- Manufacturer: The Scotts Company LLC
- Benefit: improves colour and thickness of grass
- Requirement: water in after application
Real-world experience
Owners describe this as the fertilizer they keep coming back to because it does not demand special knowledge to use well. The broad coverage and simple spreader application suit people who want a vibrant lawn without a complicated program. Two cautions come up repeatedly: water thoroughly after spreading so nutrients reach the soil, and resist over-applying or you risk burning the lawn. It is also not the product for extreme drought conditions, which matters if you are trying to establish new turf quickly during a dry spell, and the same care applies to routine machine upkeep that keeps your cutting height consistent enough to shade out weed seed.
- Works on all grass types, so one bag suits mixed or unknown lawns
- Covers 5,000 sq. ft. from a 12.5 lbs. bag, the lightest big-coverage option here
- Strengthens grass against pests and diseases alongside growth and colour
- Backed by The Scotts Company LLC, a long-established lawn care manufacturer
- Requires watering in after application, so a dry forecast delays the job
- Over-application can cause lawn burn, punishing careless spreader settings
- Not suitable for extreme drought conditions, ruling it out mid-heatwave
- ✔ You want one simple feed for the whole lawn
- ✔ You can water the lawn right after spreading
- ✔ Your grass type is mixed or unidentified
- ✖ Your area is under drought or watering restrictions
- ✖ You need weed control bundled into the product
This is the safest general-purpose choice on the list, beating the Green Max on gentleness and beating the WinterGuard pair on seasonal flexibility. It is the right pick when you simply want thicker turf that crowds crabgrass out over time. It falls behind when you need either fast iron-driven colour or any form of weed suppression, since it delivers neither.
How I picked
This roundup was rebuilt from manufacturer spec sheets, product labelling and patterns in published buyer feedback rather than from a controlled trial. The starting filter was the fertilizer numbers themselves. Crabgrass suppression through nutrition depends on nitrogen doing the heavy lifting, with ratios in the 20-0-10 family driving the vigorous top growth and root development that lets desirable turf outcompete invaders. Anything that did not lead with nitrogen was set aside early.
From there, four criteria decided placement. Coverage was compared bag-for-bag, ranging from 4,000 sq. ft. on the two WinterGuard products up to 5,800 sq. ft. on the Andersons Barricade, because coverage determines whether a homeowner finishes a lawn in one pass or has to buy twice. Application format was next: every product on this list is granular and spreader-compatible, which was a hard requirement, since uneven hand-scattering produces the striping and burn complaints that dominate negative reviews.
Weed-control capability formed the third axis. Products were sorted into three groups: true pre-emergent chemistry that blocks germination, combination weed-and-feed formulas that kill established weeds while feeding, and straight nutrition that relies on competition alone. All three approaches are legitimate, and the article keeps them separate rather than pretending one replaces the others.
Finally, recurring themes across buyer reports were catalogued: multiple applications needed for full results, damage risk near flower beds, over-fertilization when rates are ignored, and reduced pre-emergent efficacy in very wet conditions. Those complaints appear in the cons lists verbatim rather than being softened. No personal field testing is claimed here. Where timing guidance matters, regional extension resources remain the authority over any product marketing copy, and a well-maintained spreader does more for even results than any premium tier bag ever will.
Buying guide — what actually matters for Best Fertilizer Numbers for Crabgrass: Top Products for a Lush Lawn
Read the nitrogen number first
The three numbers on a fertilizer bag represent nitrogen, phosphorus and potassium. For crabgrass management, the first number carries the weight. Ratios like 20-0-10 push vigorous blade and root growth, and that density is the mechanism by which desirable turf physically denies crabgrass the space and light it needs to establish.
Match coverage to your actual lawn size
Coverage claims on this list range from 4,000 sq. ft. to 5,800 sq. ft. per bag. Measure before you buy, because buying a 4,000 sq. ft. bag for a 5,500 sq. ft. lawn guarantees either a thin, ineffective spread or a second trip to the store. The larger 18 lbs. Barricade bag is the economical choice per square foot, but only if you genuinely have the ground to cover.
Decide between prevention and competition
There are two philosophies represented here and they are not interchangeable. A pre-emergent like the Andersons Barricade stops crabgrass seed from germinating and must go down before that happens. A high-nitrogen feed works by growing turf so thick that crabgrass cannot compete. The strongest programs use both, timed separately across the season.
Get the timing right for your region
Early spring is the standard window for pre-emergent application, since the product must be in place before crabgrass seed germinates. Fall applications strengthen the lawn heading into dormancy and reduce next season's pressure. Soil temperature, not the calendar, is what actually triggers germination, so local guidance beats generic advice every time.
Plan for the spreader, not just the bag
Every product reviewed here is granular and requires a broadcast or drop spreader for even distribution. Uneven application is the single most common cause of the striping and burn that shows up in negative reviews. Calibrating your spreader to the rate printed on the bag matters as much as which bag you chose, and the same attention to keeping equipment working properly pays off across your whole lawn routine.
Know the limits before you spread
No product here is universal. The Barricade is not suitable for all grass types and loses effectiveness in extremely wet conditions. Green Max can be too strong for sensitive turf. Turf Builder Lawn Food requires watering in and is a poor choice during extreme drought. Reading these constraints beforehand prevents most of the disappointment buyers report.
Frequently Asked Questions (FAQ)
What fertilizer numbers work best against crabgrass?
Look for a high first number, since that is nitrogen. Ratios such as 20-0-10 promote vigorous growth that helps desirable grass outcompete crabgrass for light, water and root space. The phosphorus figure is often zero in these blends, which is normal for established lawns. Potassium in the third position supports stress tolerance and winter hardiness.
When should I apply crabgrass fertilizer?
Early spring is the primary window, because the product needs to act before crabgrass seed germinates. Applying in fall also helps by strengthening the lawn so it enters the next season dense and competitive. A healthy, thick lawn is far less likely to suffer a crabgrass invasion. Soil temperature is the real trigger, so watch conditions rather than dates.
Can I use a regular fertilizer for crabgrass control?
Regular fertilizers do not specifically target crabgrass. That said, products like Scotts Turf Builder still help by supplying nutrients that thicken the stand, and the WinterGuard Weed & Feed3 version adds actual weed control. For deliberate crabgrass management, a specialised pre-emergent such as the Andersons Barricade is the more direct tool.
How does Scotts Turf Builder help with crabgrass?
Scotts Turf Builder supplies a balanced nutrient mix that supports healthy, dense grass. Strong turf outcompetes crabgrass for the resources it needs to establish. The WinterGuard formula goes further by nourishing the lawn while providing weed control in the same application. That dual action is what makes it our top pick for a fall pass.
Is an iron supplement necessary for crabgrass prevention?
Iron is not essential for crabgrass prevention, but it does improve overall lawn health. Scotts Green Max includes iron specifically to promote greener grass, and healthier grass competes better against weeds. Treat iron as a colour and vigour enhancer rather than a weed control agent. Homeowners chasing a deeper shade of green will notice it most.
Do I need both a pre-emergent and a fertilizer?
For serious crabgrass problems, yes. A pre-emergent blocks germination but adds no nutrition, while a fertilizer thickens turf but does nothing to stop seed already in the soil. Running both across the season covers prevention and competition. Follow each product's recommended rate rather than doubling up in a single application.
Final verdict
The Scotts Turf Builder WinterGuard Fall Weed & Feed3 takes the top spot because it is the only pick here that kills weeds and feeds 4,000 sq. ft. of turf in a single pass. The Andersons Barricade is the runner-up and the smarter buy if your priority is stopping crabgrass seed before it ever germinates across a larger lot.
Affiliate disclosure: This post contains affiliate links. If you buy through one of these links, I may earn a small commission at no extra cost to you. It never changes my recommendation — I only suggest gear I'd actually buy myself.