
Weed Control
Best Pre-Emergent: Purdue Says the Active Barely Matters
Purdue's finding is awkward for the aisle: prodiamine, pendimethalin and dithiopyr give equivalent control at the correct rate. The split decides it, not the brand.

Pre-Emergent Herbicide (granular)
★★★★★ 4.7/5
nuestra calificación editorial cómo puntuamos4.4/5 según 5,308 compradores en Amazon — su cifra, no la nuestra.
$42–$52
Precio habitual · Up to 5,800 sq ft per 18 lb bag
Enlaces de afiliado — consulte nuestra divulgación. Las comisiones nunca influyen en los veredictos.
Prodiamina en granulado para esparcidor. El mismo ingrediente activo de larga residualidad que el concentrado profesional, sin pulverizador y sin cálculos de dosis.
La forma más fácil de que un propietario aplique prodiamina correctamente. Paga más por cada 1,000 pies cuadrados que con el concentrado pulverizable, y a cambio se quita de encima todo el problema de calibración que impide a la mayoría aplicar preemergente siquiera.
Tipo de producto
Pre-Emergent Herbicide (granular)
Ingrediente activo
Prodiamine 0.48% on granular carrier
Rango de precio
$42–$52
Cobertura
Up to 5,800 sq ft per 18 lb bag
Ideal para
Prevención de crabgrass y malezas anuales durante toda la temporada
nuestra calificación editorial
4.7 out of 5
Etiqueta leída en la base de datos de la EPA
EPA Reg. No. 9198-214
Abrimos la etiqueta aceptada de este producto en el propio Pesticide Product Label System de la EPA — la fuente más sólida que existe sobre lo que un producto está registrado para hacer.
Label read 2026-08-02: The Andersons 0.48% Granular Barricade Herbicide, prodiamine 0.48%, Group 3 — matches this record. Two things the label adds. (1) Our SLUG says '65 WDG', which is Syngenta's 65% sprayable and a DIFFERENT product; the slug is legacy and kept only because nine articles link to it. (2) Goosegrass control needs 3.1–7.1 lb/1,000 sq ft, and the bag's own coverage figure (18 lb over 5,800 sq ft) works out at 3.1 — the bottom of that range, with a sequential application advised under heavy pressure. Maximum annual rate differs by species: 7.1 lb/1,000 for bermuda, zoysia, tall fescue and St. Augustine; 4.7 for Kentucky bluegrass and perennial ryegrass; 3.5 creeping red fescue; 3.1 creeping bentgrass.
Where this page and the container disagree, the container wins — the label is the legal authority on rates and restrictions. How to read one yourself.
Contrastado con la presión real de enfermedades, malezas y plagas de cada estado.
Ventana de aplicación: Late February on the coast to mid-March in north Alabama — the earliest pre-emergent window of any state we cover
Ventana de aplicación: Largely beside the point: crabgrass and the summer annuals that drive pre-emergent programmes in the lower 48 are not the problem here, and a pre-emergent applied on a mainland schedule is money spent on an absent weed
Ventana de aplicación: Mid-February for summer weeds, and again late September for winter weeds germinating in the overseed
Ventana de aplicación: Early March in the south to early April in the Ozarks at soil 55°F
Ventana de aplicación: Mid-January (Los Angeles/San Diego) to late February (Sacramento/Bay Area) — before the last winter rains water it in for free
Ventana de aplicación: Crabgrass pre-emergent as soil holds 55°F at 2 inches — mid-April along the shoreline, into early May in the hills; forsythia dropping its blooms is the local cue
Ventana de aplicación: Crabgrass pre-emergent as soil holds 55°F at 2 inches — typically mid-March in Sussex and late March to early April in New Castle County, with a second application six to nine weeks later because one pass does not cover a Delaware season
Ventana de aplicación: Early February (Orlando/Tampa) to early March (Panhandle); South FL applies year-round for tropical weeds
Ventana de aplicación: Mid-February (Savannah/South GA) to early March (Metro Atlanta), with a second application about eight weeks later — the state is long enough north to south that one date cannot serve it
Ventana de aplicación: There is no single spring flush to time against — warm-season weeds germinate through much of the year, so pre-emergent here is a repeated programme on label intervals rather than a February or March decision
Ventana de aplicación: Crabgrass pre-emergent as soil holds 55°F at 2 inches — usually April in the Treasure Valley, May in the north and at elevation. Cool-season turf here grows fastest when soil sits at 55 to 65°F, which is the same signal
Ventana de aplicación: Late March at the Ohio River confluence to late April in Chicagoland — the widest single-state spread in the Midwest, and the reason calendar-based advice fails here
Ventana de aplicación: April, on soil temperature — and Purdue's note is that any nitrogen in a pre-emergent product should be slow-release, capped at 0.75 lb per 1,000 sq ft
Ventana de aplicación: Mid-April to early May at soil 55°F — a narrow, late window compared with the states south of here
Ventana de aplicación: Crabgrass pre-emergent as soil holds 55°F at 2 inches — typically late March to mid-April moving northwest, with a second application six to eight weeks later in the wetter east
Ventana de aplicación: Mid-March in the Jackson Purchase to early April in the mountains at soil 55°F — and over Inner Bluegrass karst the barrier is worth splitting into two applications, because the ground drains faster than the label assumes
Ventana de aplicación: Late February to mid-March, before soil warms past 55°F — the earliest window of any state we cover
Ventana de aplicación: Crabgrass pre-emergent as soil holds 55°F at 2 inches — mid to late May on the southern coast, June inland; north of Bangor crabgrass pressure is often low enough that the honest answer is to skip it
Ventana de aplicación: Mid-March on the Eastern Shore to mid-April in the mountains — forsythia bloom is the traditional Maryland signal (soil 55°F)
Ventana de aplicación: Mid-April on the coast to early May in the Berkshires at soil 55°F — forsythia is the working signal here
Ventana de aplicación: Late April (Metro Detroit/South) to mid-May (Up North), as soil reaches 55°F
Ventana de aplicación: Mid-May, as soil warms — the season opens later here than anywhere else we cover
Ventana de aplicación: Late February on the coast to mid-March in the north
Ventana de aplicación: Late March in the Bootheel to mid-April along the Iowa line — soil 55°F moves south to north across about three weeks
Ventana de aplicación: Crabgrass pre-emergent as soil holds 55°F at 2 inches, which is generally May and can be late May at elevation — and crabgrass pressure in much of Montana is low enough that this is a decision rather than a default
Ventana de aplicación: Crabgrass pre-emergent as soil holds 55°F at 2 inches — usually late April in the south-east, into mid-May in the north and west
Ventana de aplicación: February in Las Vegas to April in the northern high desert
Ventana de aplicación: Crabgrass pre-emergent as soil holds 55°F at 2 inches — late April to early May on the Seacoast, and up to three weeks later in the north; crabgrass pressure itself falls off with elevation
Ventana de aplicación: Mid-April in the south to early May in the northwest, as soil reaches 55°F
Ventana de aplicación: Crabgrass and summer annual pre-emergent as soil holds 55°F at 2 inches — February to early March in the southern valleys, April to May in the north. The state spans two months on this decision
Ventana de aplicación: Mid-April (Long Island/NYC) extending into early May (Buffalo/Upstate), as soil reaches 55°F
Ventana de aplicación: Early to mid-March in the Piedmont, when soil temps approach 55°F — earlier along the coast
Ventana de aplicación: Crabgrass pre-emergent as soil holds 55°F at 2 inches, usually mid to late May — and crabgrass pressure here is genuinely lower than in the states to the south, so this is a decision rather than a routine
Ventana de aplicación: Late March along the Ohio River to late April in the Lake Erie snow belt at soil 55°F — a month of spread across one state
Ventana de aplicación: Early March in the south to early April in the panhandle at soil 55°F; on western sand, split the rate rather than trusting one pass to hold
Ventana de aplicación: Late February to March west of the Cascades — the earliest cool-season window anywhere, because the valley barely stops growing
Ventana de aplicación: Mid-April around Philadelphia to early May on the northern plateau at soil 55°F — three weeks of spread across fifty miles where the ridges rise, which is why a neighbour's timing is not yours
Ventana de aplicación: Crabgrass pre-emergent once soil holds 55°F at 2 inches — usually the second half of April on the bay and coastal towns, into early May inland
Ventana de aplicación: Early March on the coast to late March in the Upstate, before soil warms past 55°F
Ventana de aplicación: Crabgrass pre-emergent as soil holds 55°F at 2 inches, generally mid-May — and pressure is lower here than in the corn-belt states, so it is a judgement rather than an annual purchase
Ventana de aplicación: Early March in Memphis to late March in Knoxville — soil 55°F sweeps west to east
Ventana de aplicación: Mid-February (Houston/San Antonio) to mid-March (Dallas/Panhandle), soil temps 55°F for crabgrass
Ventana de aplicación: Late March to mid-April along the Wasatch Front at soil 55°F
Ventana de aplicación: Crabgrass pre-emergent as soil holds 55°F at 2 inches — usually mid-May in the Champlain Valley and later in the hills; in the coldest towns crabgrass pressure is low enough that the question is whether to bother
Ventana de aplicación: Early March (Hampton Roads/Tidewater) to late March/early April (Northern VA/Richmond), as soil reaches 55°F
Ventana de aplicación: Mid-April to early May as soil reaches 55°F; crabgrass pressure is low west of the Cascades, where annual bluegrass and moss matter more
Ventana de aplicación: Crabgrass pre-emergent as soil holds 55°F at 2 inches — typically late March to early April in the valleys, into late April at elevation, with a second application six to nine weeks later
Ventana de aplicación: Late April to mid-May, as soil temperatures reach near 60°F for several consecutive days — forsythia bloom is the usual reminder
Common questions
The Andersons Barricade Granular Pre-Emergent suele costar $42–$52 y cubre Up to 5,800 sq ft per 18 lb bag.
The Andersons Barricade Granular Pre-Emergent actúa sobre Crabgrass, Goosegrass, Annual bluegrass, Spurge, Henbit, Chickweed.
Prodiamine 0.48% on granular carrier, registrado con el n.º de registro EPA 9198-214.
Cuesta bastante más por cada 1,000 pies cuadrados que el concentrado pulverizable de prodiamina
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Boletín de Lawn Health
Ventanas de preemergentes, alertas de enfermedades y calendarios de fertilización para su región — un correo corto, justo cuando su césped lo necesita.
Gratis para siempre. Cancele cuando quiera. Solo céspedes en EE. UU. (por ahora). Los correos se envían en inglés. El complemento de esta temporada: la lista imprimible de verano .