A 0-0-7 pre-emergent fights weeds by targeting the soil, not the grass. The numbers mean zero nitrogen, zero phosphorus, and seven parts potassium — a formula designed purely for prevention, not growth stimulation. This makes it a go-to for lawn managers who want a thick weed barrier without pushing unwanted leaf growth during the germination window.
I’m Mohammad Maruf — the founder and writer behind Gardening Beyond. My approach relies on cross-referencing turfgrass extension bulletins with thousands of verified owner reports to isolate which granular formulations deliver consistent control across varied climates.
The goal is to help you find the most reliable 0-0-7 pre-emergent for your specific lawn type and weed pressure without overcomplicating your spring or fall regimen.
How To Choose The Best 0-0-7 Pre-Emergent
Choosing a pre-emergent with zero nitrogen means you’re committing to a pure weed-prevention strategy without feeding the turf at the same time. That’s the right call for established lawns where extra nitrogen could trigger a flush of growth that requires more mowing and risks disease. But within the 0-0-7 category, the real differences come down to active-ingredient percentages, coverage area, and your specific weed targets.
Active Ingredient Concentration — Prodiamine Matters Most
The two dominant active ingredients in 0-0-7 products are prodiamine and dithiopyr. Prodiamine is the most common, and its concentration (0.37%, 0.43%, 0.48%) directly dictates how long the barrier lasts. A higher percentage usually means longer residual control — up to four months with formulations like Lesco’s 0.43% Stonewall. Lower percentages require stricter timing but still deliver solid results when applied before soil temperatures hit 55°F.
Coverage Per Bag — Match It to Your Lawn
Bag sizes of 18, 25, and 50 pounds each cover roughly 4,500, 6,250, and 12,500 square feet respectively at the recommended rate. Buying a 50-pound bag for a 5,000-square-foot lawn forces you to waste product or over-apply, which can increase cost without improving control. Match the bag to your actual square footage — many manufacturers list coverage explicitly, and a standard 1,000-square-foot test patch can confirm your spreader setting.
Weed Spectrum — Know Which Invaders You’re Fighting
Most 0-0-7 products target annual grasses like crabgrass and foxtail, plus some broadleaf weeds like chickweed and henbit. But not every formulation stops every weed. The Andersons Barricade, for example, is labeled for over 30 species because of its 0.48% prodiamine load. If your specific problem is Poa annua (annual bluegrass) or clover, check the label’s target list — some products control these better than others.
Application Timing — Early Spring and Fall Are Non-Negotiable
A pre-emergent only works if it’s in the soil before weed seeds germinate. For cool-season lawns, apply in early spring when soil temperatures reach 55°F and again in early fall. For warm-season lawns, a single spring application with a split fall treatment works best. Products explicitly labeled for “early spring and fall” like The Andersons Barricade give you a clear window — ignore timing and the barrier fails regardless of the product’s quality.
Quick Comparison
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| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| The Andersons Barricade 50 lb | Premium | Maximum weed spectrum & longevity | 0.48% Prodiamine | Amazon |
| Lesco 0-0-7 with 0.43% Stonewall 50 lb | Premium | Large lawns & landscape beds | 0.43% Prodiamine | Amazon |
| Lawn Synergy 0-0-7 Safeguard 25 lb | Mid-Range | Bermuda, Zoysia, Fescue lawns | 0.37% Prodiamine | Amazon |
| Lawn Synergy 0-0-7 Safeguard 18 lb | Entry-Level | Small lawns & budget-friendly start | 0.37% Prodiamine | Amazon |
| Lawn Synergy 13-0-10 Pre-Emergent 25 lb | Combo | Green-up plus crabgrass prevention | 50% Slow-Release N | Amazon |
In‑Depth Reviews
1. The Andersons Barricade 50 lb Bag
The Andersons Barricade stands apart because of its 0.48% prodiamine concentration — the highest in this roundup — which translates into a broader weed spectrum and longer residual control. It’s labeled for over 30 grass and broadleaf weeds, making it a true professional-grade choice for homeowners managing mixed weed pressure. The DG Pro formulation delivers more particles per square inch, improving barrier uniformity across the lawn.
Coverage of 14,200 square feet from a single 50-pound bag means one application covers a quarter-acre lot with room to spare. Users report two full seasons of near-total crabgrass prevention with a single spring application in some cases, though heavy clover or Poa annua infestations may still require a follow-up post-emergent spray. The granules flow smoothly through standard broadcast spreaders without bridging.
The primary trade-off is that Barricade is a strict pre-emergent — it won’t green up the lawn or supply any nutrients. If your grass looks thin, you’ll need a separate nitrogen source. Some reviewers noted that clover persisted after application, which suggests the 0.48% prodiamine load is crabgrass-focused rather than broadleaf-dominant. For users who want both nitrogen and prevention, a combo product might make more sense.
What works
- Highest prodiamine percentage in the category (0.48%)
- Labeled for over 30 weed species
- DG Pro formulation ensures even particle distribution
What doesn’t
- Clover control may require additional post-emergent treatment
- No nitrogen or iron — pure prevention only
2. Lesco 0-0-7 with 0.43% Stonewall Pre-Emergent 50 lbs
The Lesco 0-0-7 uses 0.43% prodiamine (branded as Stonewall) to deliver up to four months of protection from a single application. That’s a meaningful advantage for warm-season lawns in the Southeast, where a March application can carry through June without a second pass. It also includes potassium, which supports root health and stress tolerance without pushing top growth.
Owners consistently report dramatic reductions in crabgrass after the first spring treatment. Several verified reviews note that even in heavy crabgrass pressure zones, the lawn remained clean through peak sprouting season after a single early application. The 50-pound bag covers 12,500 square feet at the standard rate, which fits a standard quarter-acre lot neatly.
The downside is the non-returnable policy — if the product doesn’t match your spreader calibration or weed spectrum, you’re stuck with it. Also, some users found that certain broadleaf weeds survived after the spring window, suggesting that prodiamine at 0.43% may miss species like henbit or chickweed if applied later than recommended. The lesion on iron is also noted — Lawn Synergy markets an enhanced version with iron separately.
What works
- Four-month residual protection with one application
- Potassium content supports turf root vigor
- Excellent results on Bermuda and Zoysia lawns
What doesn’t
- Non-returnable — requires careful timing
- Some broadleaf weeds may survive the barrier
3. Lawn Synergy 0-0-7 Safeguard Pre-Emergent (25 lbs)
The Lawn Synergy 0-0-7 Safeguard in the 25-pound bag strikes a strong balance between cost and coverage for mid-sized lawns. With 0.37% prodiamine, it covers 6,250 square feet — enough for a typical suburban front yard without overspending on a larger bag. The product is labeled specifically for Bermuda, Centipede, Zoysia, and Tall Fescue, making it a safe choice for southern and transition-zone lawns.
Customer feedback highlights consistent performance against crabgrass and a noticeable reduction in Poa annua when applied heavily and followed up with a split application. One owner cut their annual bluegrass population by roughly 90% after a double-dose spring regimen. The granules mix easily in broadcast spreaders and don’t clump even when stored in humid conditions.
The caveat is that 0.37% prodiamine requires stricter timing than the higher-concentration options. If you apply even two weeks late, the barrier may be thin. A few reviewers reported that their crabgrass returned after a single application, likely due to a missed second window rather than product failure. The bag also lacks any nitrogen or iron, so you’ll need to supplement feeding separately.
What works
- Mid-range prodiamine level for solid prevention without overkill
- Effective against Poa annua with split applications
- Smooth spreading with no clumping
What doesn’t
- Requires precise early-spring timing for best results
- Zero nutrients — nitrogen feeding needed separately
4. Lawn Synergy 0-0-7 Safeguard Pre-Emergent (18 lbs)
The 18-pound version of the Lawn Synergy 0-0-7 Safeguard is essentially the same chemistry as the 25-pound bag but packaged for smaller yards. It covers up to 4,500 square feet, which is ideal for townhouse lawns, small front yards, or anyone who wants to test a product before committing to a larger investment. The same 0.37% prodiamine formulation applies.
Users praise the product’s ease of use and the responsive customer service from Turf Care Supply. Several reviews mention that the bag arrived intact, granules were dry and free-flowing, and the spreader calibration was straightforward. For lawns under 5,000 square feet, this bag eliminates the waste of buying a 50-pound package that would leave half the product sitting in the garage until next season.
The limitation is obviously the smaller coverage — you’ll pay more per square foot compared to buying the 25- or 50-pound bags. Some users found that their lawn fell just outside the 4,500-square-foot mark, meaning they needed two bags for a single application, which reduces the value proposition. If your lawn is close to 6,000 square feet, the 25-pound bag is a smarter buy.
What works
- Perfect size for small lawns under 5,000 sqft
- Same effective 0.37% prodiamine as larger bag
- Excellent customer service from manufacturer
What doesn’t
- Higher cost per square foot than larger bags
- May not cover transitional lawns without buying two bags
5. Lawn Synergy 13-0-10 Pre-Emergent Lawn Fertilizer (25 lbs)
The 13-0-10 option from Lawn Synergy is the only product in this lineup that combines pre-emergent weed prevention with actual nitrogen (13% N, 50% slow-release). This makes it a practical choice for homeowners who want to green up their lawn while preventing crabgrass in a single pass. It’s labeled for Tall Fescue, Bermuda, Zoysia, St. Augustine, and Centipede lawns.
Reviewers consistently report a deep green color after the first application, with several posting photos of visible results within two weeks. The 50% slow-release nitrogen means the color lasts longer without causing a growth spike that requires extra mowing. The product recommends two applications on cool-season lawns in spring and one in fall for warm-season turf.
The trade-off is the lower prodiamine concentration compared to the pure 0-0-7 products. One reviewer explicitly noted that crabgrass survived after application, which suggests the combination formula may not deliver the same level of prevention as a dedicated pre-emergent like the 0.48% Barricade. If your main goal is weed control and you don’t need the nitrogen boost, a straight 0-0-7 product will perform better.
What works
- Combines weed prevention with 13% nitrogen for greening
- 50% slow-release nitrogen sustains color without rapid growth
- Suitable for multiple warm- and cool-season grass types
What doesn’t
- Weed control is less reliable than dedicated 0-0-7 products
- Not a true 0-0-7 — contains nitrogen for those who want it
Hardware & Specs Guide
Prodiamine Concentration
The percentage of active prodiamine per pound of granules dictates how long the chemical barrier lasts in the soil. Products range from 0.37% (budget-friendly, requiring tighter application windows) to 0.48% (premium, offering up to four months of protection). Higher concentrations also broaden the weed spectrum — The Andersons Barricade at 0.48% covers over 30 weed species, while 0.37% products typically stop about 15-20.
Coverage Per Bag
Granular pre-emergents are sold by weight, but coverage is measured by square footage at a specific spreader setting. A standard 18-pound bag covers 4,500 sqft, a 25-pound bag covers 6,250 sqft, and a 50-pound bag covers 12,500-14,200 sqft. Over-applying wastes product and can harm turf roots; under-applying leaves gaps in the weed barrier. Always measure your lawn with a measuring wheel or satellite tool before buying.
FAQ
Can I use a 0-0-7 pre-emergent on a newly seeded lawn?
What’s the difference between 0-0-7 and a standard 10-10-10 fertilizer?
How soon after applying 0-0-7 should I water it in?
Can I mix 0-0-7 with other lawn products in the same spreader pass?
Why does my 0-0-7 bag list a specific grass type on the label?
Final Thoughts: The Verdict
For most gardeners, the 0-0-7 pre-emergent winner is the The Andersons Barricade 50 lb Bag because its 0.48% prodiamine concentration delivers the broadest weed spectrum and the longest residual control without adding nitrogen you don’t need. If you want a four-month barrier with potassium for root health, grab the Lesco 0-0-7 with 0.43% Stonewall. And for a budget-friendly entry point that still provides reliable crabgrass prevention, the Lawn Synergy 0-0-7 Safeguard 25 lb covers a mid-sized lawn without breaking the bank.