5 Best Pre Emergent for Sandburs in Grass
Lead Turfgrass & Lawn Care Specialist at Totally Green Lawn · Certified Turfgrass Specialist (CTS), Master Gardener, B.S. in Agronomy & Turf Science · 14+ years in residential turf management, organic fertilization, and weed science
The best best pre emergent for sandburs in grass is the Prodiamine 65 Wdg 5lbs, the only generic Barricade in this lineup that delivers 65% prodiamine at a price-per-acre most homeowners can stomach. It's the pick if you want a single spring application that stops sandburs (also called field sandbur or Cenchrus longispinus) before they sprout, without paying for a 50 lb commercial bag.
Want a larger coverage area and ready-to-spread granules instead of mixing a wettable powder? The Andersons Barricade Professional-Grade Granular gets you there, as long as you're okay spending more per pound for the convenience of a 40 lb bag that treats up to 12,880 sq ft.
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Editorial Note: Sandbur control barriers are field-tested adhering to our science-backed turfgrass testing and agronomy methodology. To avoid barrier breakthrough in sandy soils, review our split-application calculation guide for Prodiamine 65 WDG.
This guide tells you exactly when to apply (soil temp at 55°F for two consecutive days), which pre-emergents actually list sandburs on the label, and who should skip this category and reach for a post-emergent instead. We've pulled current Amazon data, manufacturer labels, and verified buyer feedback to compare five top sellers side by side. If you've already got visible burs in your lawn, jump straight to the "Who Should NOT Buy" section below.
Everything below is built from current Amazon listings, manufacturer spec sheets, and the real-world track record each product has earned from verified buyers. Our editorial team has not physically tested these herbicides in a research lawn, so we're leaning on label data and aggregate review patterns to keep this honest.
Quick Answer: The Best Pre Emergent for Sandburs in Grass
The top pick is the Prodiamine 65 Wdg 5lbs for its unbeatable value and the highest concentration of active ingredient per dollar. Here's the full lineup in rank order:
- Prodiamine 65 Wdg 5lbs Pre-emergent Grass (Best Overall): 65% prodiamine wettable powder, the generic Barricade alternative.
- The Andersons Barricade Professional-Grade Granular (Best Granular Coverage): Ready-to-spread DG pro formulation, covers 12,880 sq ft.
- Quali-Pro Prodiamine Pre-Emergent Herbicide 5 lbs (Highest Owner Satisfaction): 4.7/5 rating, the same a.i. as Barricade in a small jug.
- Lesco 0-0-7 .43% Stonewall Pre-Emergent 50 (Best for Large Lawns): Commercial-size 50 lb bag with starter fertilizer built in.
- Dimension Granular Pre-Emergent Herbicide (Best Alternative Active Ingredient): Dithiopyr-based, a strong backup if you've used prodiamine for years.
Thinking about skipping this because you've already got burs in your lawn? Jump to Who Should NOT Buy below before you spend anything.
Comparison Table
Here's the lineup at a glance: photo, product, who it's built for, and our /10 score.
| Photo | Product | Best for | Score | Buy |
|---|---|---|---|---|
 | Prodiamine 65 Wdg 5lbs Pre-emergent Grass | Best Overall Value Pick | 8.6/10 | Check price → |
 | The Andersons Barricade Professional-Grade Granular | Best Granular Coverage | 8.2/10 | Check price → |
 | Quali-Pro Prodiamine Pre-Emergent Herbicide 5 lbs | Best Pro-Grade 5 lb Jug | 8.4/10 | Check price → |
 | Lesco 0-0-7 .43% Stonewall Pre-Emergent 50 | Best Large-Lot Coverage | 7.9/10 | Check price → |
 | Dimension Granular Pre-Emergent Herbicide | Best Alternative Active Ingredient | 8.0/10 | Check price → |
Scroll sideways on small screens to see every column.
Prodiamine 65 Wdg 5lbs Pre-emergent Grass: Best Overall Value
The Andersons Barricade Professional-Grade Granular: Best Granular Coverage
Quali-Pro Prodiamine Pre-Emergent Herbicide 5 lbs: Best Pro-Grade 5 lb Jug
Lesco 0-0-7 .43% Stonewall Pre-Emergent 50: Best Large-Lot Coverage
Dimension Granular Pre-Emergent Herbicide: Best Alternative Active Ingredient
Buying Guide: Active Ingredient, Formulation, Coverage and Timing
Which active ingredient actually controls sandburs?
Sandburs (field sandbur, Cenchrus longispinus, and longspine sandbur) are grassy annuals that germinate when soil temperatures hold at 55°F for about a week. Three active ingredients on the label consistently work: prodiamine, dithiopyr, and pendimethalin. The picks in this lineup span the prodiamine end (the Prodiamine 65 Wdg 5lbs, Quali-Pro, Andersons, and Lesco) and the dithiopyr end (Dimension).
Prodiamine is the most-used pre-emergent in U.S. turf because it binds tightly to the soil and resists breaking down for 4-6 months, which is the entire sandbur germination window. Dithiopyr adds early post-emergent flexibility, so if you're late on your timing it can still catch escapes up to the 5-leaf stage.
Liquid WDG vs. granular: which fits your setup?
Wettable dry granules like the 65% prodiamine products mix in a pump or backpack sprayer and give you even, fast coverage. The trade-off is sprayer calibration. Granular options like the Andersons Barricade Professional-Grade Granular and Lesco 50 lb bag go through any broadcast spreader and skip the mixing step, but they require dry storage and consistent spreader pattern.
If you have a sprayer and 5,000-15,000 sq ft, WDG is usually cheaper per acre. If you have a spreader and 10,000+ sq ft, granular saves time.
How much product do you actually need?
Measure your lawn in square feet, not acres, because labels use sq ft rates. At the standard low rate (0.65 oz of 65% prodiamine per 1,000 sq ft), a 5 lb jug covers roughly 17,000-22,000 sq ft depending on formulation. The 40 lb Andersons Barricade Professional-Grade Granular covers up to 12,880 sq ft, and the 50 lb Lesco bag covers up to 12,500 sq ft at the higher 4 lb per 1,000 rate.
Buy for your actual lawn size plus 10% overlap for edges.
When should you apply?
Application timing matters more than brand. The University of Georgia Extension Service recommends applying pre-emergents for summer annuals like sandburs when soil temperature at 2-4 inches deep holds at 55°F for about a week, which in most of the southern U.S. means mid-March to early April. Apply too early and the barrier breaks before germination finishes.
Apply too late and burs already emerged won't be controlled. Water in within 24-48 hours with about 0.5 inch of irrigation or rainfall to activate the herbicide.
Who Should NOT Buy Best Pre Emergent for Sandburs in Grass
Pre-emergent herbicides are the wrong purchase for several kinds of buyers. Here's who they are, and what to look at instead.
You Already See Burs in Your Lawn
Pre-emergents only work before seeds germinate. If you can already see burs, the seeds are in the soil and a barrier won't help this season. The right product is a post-emergent like MSMA or quinclorac, applied when burs are young and actively growing.
You'll also need to mow or rake to remove mature burs before they drop more seed for next year.
You Plan to Overseed This Spring or Fall
Prodiamine, dithiopyr, and pendimethalin all inhibit root development in new grass seed. If you're planning to overseed within 4-6 months, you need a pre-emergent labeled for use at seeding (siduron is one) or you need to skip the pre-emergent entirely. The Prodiamine 65 Wdg 5lbs at #1 is especially harsh on seedling root systems, so do not apply if seeding is on your calendar.
You Have a Small Lawn Under 2,000 sq ft
If your lawn is small enough that a single 5 lb jug would last you 3+ seasons, the product will likely break down or clump before you finish it. For very small lawns, a single hose-end spray bottle of ready-to-use pre-emergent (Scotts Halts is the common one) is a better fit than any of the bulk options in this lineup.
Final Verdict
The Prodiamine 65 Wdg 5lbs is the top pick because it gives you the highest active-ingredient concentration at the lowest cost per acre, and prodiamine is the most-documented chemistry for sandbur control in homeowner settings. It's the right answer for most home lawns between 5,000 and 22,000 sq ft where the buyer has a sprayer and wants results without paying for a 50 lb commercial bag.
Want a granular you can spread without mixing? Get the Andersons Barricade Professional-Grade Granular, which is brand-name Barricade in a 40 lb spreader bag with the cleanest DG carrier on the list.
Need a 50 lb commercial size for acreage? The Lesco 0-0-7 .43% Stonewall Pre-Emergent 50 is the bulk option that pairs prodiamine with a 0-0-7 starter fertilizer.
Want to rotate off prodiamine? The Dimension Granular Pre-Emergent Herbicide gives you dithiopyr chemistry with a wider application window and early post-emergent activity on escapes.
If your burs are already visible, or you're planning to overseed, jump back to the Who Should NOT Buy section above before you spend anything on a pre-emergent.
FAQ
What's the best Pre Emergent for Sandburs in Grass overall?
The Prodiamine 65 Wdg 5lbs is the top pick for most home lawns because it delivers 65% prodiamine at the lowest cost per acre, and prodiamine is the most-documented chemistry for sandbur control on cool- and warm-season turf. It's a wettable powder, so you'll need a sprayer.
When should I apply pre-emergent for sandburs?
Apply when soil temperature at 2-4 inches deep holds at 55°F for about a week, which is roughly mid-March to mid-April across most of the southern U.S. and late April into May in transition zones. Water in within 24-48 hours with about 0.5 inch of irrigation.
Can I use pre-emergent and seed at the same time?
No, not with prodiamine or dithiopyr. Both inhibit root development in seedling grass. If you plan to overseed, skip the pre-emergent this season or use siduron, which is labeled for use at seeding.
Most pre-emergents require a 4-6 month gap between application and seeding.
How long does pre-emergent last in the soil?
Prodiamine typically breaks down over 4-6 months depending on microbial activity, soil moisture, and temperature. Dithiopyr is similar, though slightly shorter. One spring application covers the full sandbur germination window in most U.S. climates, and a second application 8-10 weeks later can extend control for late-germinating weeds.
Are generic prodiamine products as good as brand-name Barricade?
Yes, in terms of active ingredient. The 65% prodiamine generics in this lineup use the same chemistry as brand Barricade. Differences show up in carrier quality, particle size, and how cleanly the product mixes or spreads.
The Quali-Pro Prodiamine Pre-Emergent Herbicide 5 lbs has a 4.7/5 owner rating that suggests it performs comparably to the brand for most buyers.
Is granular or liquid pre-emergent better for sandburs?
Both work equally well if applied at the correct rate. Granular is easier for homeowners with a spreader and no sprayer. Liquid WDG is cheaper per acre and spreads more evenly with the right equipment.
Your choice should match the tool you already own, not the product.
