
Weed Control
Best Weed Killer for Centipede: The Sensitive One
NC State says it plainly: centipedegrass is sensitive to 2,4-D. It also wants no lime and almost no nitrogen — so the standard Southern routine is wrong three ways.

Iron-Based Selective Herbicide
★★★★☆ 3.5/5
nuestra calificación editorial cómo puntuamos4/5 según 261 compradores en Amazon — su cifra, no la nuestra.
$28–$35
Precio habitual · Roughly 640–1,280 sq ft per 32 oz bottle (6.4 gal of spray at 5–10 gal per 1,000 sq ft)
Enlaces de afiliado — consulte nuestra divulgación. Las comisiones nunca influyen en los veredictos.
Una herramienta genuina de tratamiento puntual para quien no quiere esparcir 2,4-D — y el único producto de esta lista que además se ocupa de musgo, algas y líquenes.
Legítimo por lo que realmente es, y comprado con frecuencia por el motivo equivocado. El FeHEDTA quema rápidamente las malezas de hoja ancha y el musgo, funciona con frío hasta los 50 °F y le evita pulverizar un herbicida hormonal sintético sobre todo el césped. Dos cosas que conviene saber antes de comprarlo. UC IPM documenta que el hierro-HEDTA produce quemado y NO mata las raíces, de modo que las malezas perennes rebrotan y la propia etiqueta programa una repetición a las 3 o 4 semanas. Y con unos 640 a 1,280 pies cuadrados por frasco, cuesta alrededor de cinco veces más por cada mil pies cuadrados que un granulado abono-herbicida — lo cual está bien para tratar puntos concretos y sale caro si pensaba cubrir un césped entero.
Tipo de producto
Iron-Based Selective Herbicide
Ingrediente activo
Iron HEDTA (FeHEDTA) 26.52%
Rango de precio
$28–$35
Cobertura
Roughly 640–1,280 sq ft per 32 oz bottle (6.4 gal of spray at 5–10 gal per 1,000 sq ft)
Ideal para
Tratar puntualmente malezas de hoja ancha y musgo sin esparcir un herbicida sintético
nuestra calificación editorial
3.5 out of 5
Etiqueta leída en el PDF del titular del registro
EPA Reg. No. 67702-26-4
Leímos la etiqueta impresa publicada por la empresa titular del registro. La EPA no aloja un PDF de esta, así que es el mejor texto disponible.
Label read 2026-08-02 (Bonide's own label PDF; registrant 67702 is W. Neudorff GmbH, Bonide distributes). Iron HEDTA 26.52% confirmed. Every caution in this record checks out: do not apply above 85F, do not apply to bentgrass, rainfast/irrigation interval 3 hours, maximum 4 applications per area per year, may stain thatch, re-seed permitted 1 day after applying. THE FINDING: the moss/algae/lichen use carries an asterisk reading 'Not for use in California'. Our California page recommended this product for moss; corrected 2026-08-02 in both this record and organic-weed-killer-for-lawns.mdx. The label names no approved turf species at all — only the bentgrass exclusion and a test-a-small-area instruction — so grass_types here is our own relevance judgement, not a label claim.
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: April–May and September, and check every label against centipede before it leaves the shelf
Ventana de aplicación: June through July, inside the same short window everything else happens in. There is no autumn second chance
Ventana de aplicación: March–May and during monsoon flushes; Celsius-type products handle 100°F+ windows
Ventana de aplicación: Bounded by the label's temperature ceiling rather than the calendar — spring treatments finish before the June heat arrives, and nothing selective goes down again until September cools off
Ventana de aplicación: March–May while weeds are young; avoid spraying drought-stressed turf in summer
⚖️ Label exclusion first: the moss, algae and lichen use is marked not for use in California, so here this is a broadleaf spot-treatment only. What still applies is the cool-weather range, which suits a Mediterranean winter weed flush when 2,4-D products work slowly, and it sidesteps the atrazine setbacks near water.
Ventana de aplicación: May–June and September; high-altitude sun makes stressed turf easy to injure, so spot-treat rather than blanket-spray
Ventana de aplicación: Broadleaf sprays in May–June and again in September, when the weeds are moving sugars to the roots; skip July and August, when a stressed cool-season lawn takes the injury and the weed does not
Ventana de aplicación: April to late May, then September into October. Skip July and August entirely: this is the transition zone, and a stressed tall fescue lawn takes the injury the weed shrugs off
Ventana de aplicación: March–May and October–November; avoid applications above 85°F
Ventana de aplicación: April to early June and September–October; avoid mid-summer sprays on stressed turf
Ventana de aplicación: Year-round where the turf is actively growing, which is most of the time; the constraint is heat and drought stress on the leeward side rather than a dormant season
Ventana de aplicación: Late April into June, then September into October; skip the July and early August heat, which is also when UI's own fertilizer schedule goes quiet
Ventana de aplicación: May–June and September; fall beats creeping charlie best
Ventana de aplicación: October is the most effective month for broadleaf weeds; never apply above 80°F or to drought-stressed turf
Ventana de aplicación: October, and October is most of it — but check the wind and the date against what is happening in the fields, because early-summer growth-regulator drift is a real seasonal risk here and your own spray carries the same way
Ventana de aplicación: April into May and again in September–October; avoid July and August, when a tall fescue lawn here is already at its limit
Ventana de aplicación: April–May and September–October; autumn is the knockout window for the wild garlic that defines a Kentucky winter lawn
Ventana de aplicación: March–May and October–November; avoid applications above 85°F and never on drought-stressed St. Augustine
Ventana de aplicación: June, then a narrow late-August to mid-September window. Maine's usable autumn is the shortest in New England
Ventana de aplicación: April–May and September–October; autumn is the knockout window for the ground ivy and violet the Piedmont is full of
Ventana de aplicación: A narrow autumn is the real window here: late September into October, after the summer heat and before New England's early frost closes the season
Ventana de aplicación: May–June and September; autumn is the stronger window for perennial broadleaf weeds
Ventana de aplicación: Late May–June and September; autumn is the stronger window for perennial broadleaf weeds
Ventana de aplicación: April–May and September, avoiding the midsummer heat restrictions on most labels
Ventana de aplicación: April–May and September–October; skip summer sprays on drought-stressed fescue
Ventana de aplicación: June, then late August into September. In a sub-100-day valley there is no third chance
Ventana de aplicación: Late spring and again from late August through September, when perennial broadleaf weeds are moving reserves to the root
Ventana de aplicación: March–April and October in the south; May and September in the north
Ventana de aplicación: Late May into June, then late August through September. The autumn window closes earlier here than anywhere else in southern New England
Ventana de aplicación: May and September–October; autumn is the knockout window for perennial broadleaf weeds
Ventana de aplicación: Spring and early autumn; in the south skip the June heat entirely, and in the north the usable autumn window closes by early October
Ventana de aplicación: May and September–October; autumn is the knockout window for perennial broadleaf weeds
Ventana de aplicación: April–May and September–October; avoid spraying heat-stressed fescue in July–August
Ventana de aplicación: Early to mid-June, then late August into early September. There is no third opportunity
Ventana de aplicación: May–June and September; fall applications hit dandelion taproots hardest
Ventana de aplicación: Judged by wind before season: sustained wind is Oklahoma's normal condition, so the usable spray days are calm mornings in April, May and September rather than whole months
Ventana de aplicación: March–May and September–October; the long mild shoulder seasons give more usable spray days than most states get
Ventana de aplicación: May and September — fall is the knockout window for perennial broadleaf weeds
⚖️ Useful in the shoulder seasons here: it stays active down to 50°F, and moss control matters on shaded, acidic northern lawns.
Ventana de aplicación: Broadleaf work in May–June and again in September; the September pass is the one that holds, because the weed is moving reserves down
Ventana de aplicación: April–May and September–October, and never above 90°F — centipedegrass is sensitive to 2,4-D both at spring green-up and in summer heat
Ventana de aplicación: Early to mid-June, then late August into September, which is the pass that actually holds on perennial broadleaf weeds
Ventana de aplicación: April–May and September–October; skip sprays on drought-stressed summer fescue
Ventana de aplicación: April–early June and September–October; avoid herbicides above 90°F
Ventana de aplicación: May and September, avoiding the intense midsummer heat on the label
Ventana de aplicación: Late May through June, then a short late-August to mid-September window. Vermont's autumn window is the narrowest in New England
Ventana de aplicación: April–May and September–October; skip sprays on heat-stressed fescue in July and August
Ventana de aplicación: April–May and September–October; WSU caps applications at 80°F, stricter than the 85–90°F ceilings used elsewhere
Ventana de aplicación: April into May and again in September–October. Skip July and August: this is transition-zone country and a heat-stressed tall fescue lawn absorbs the injury the weed does not
Ventana de aplicación: Early to mid-fall is the favourable window for dandelion and other perennial broadleaf weeds
Ventana de aplicación: June, then late August into September. UW's own framing is useful: a slow-release application covers a 90 to 100 day growing season, which is roughly the entire Wyoming season
Common questions
Bonide Captain Jack's Lawnweed Brew Concentrate suele costar $28–$35 y cubre Roughly 640–1,280 sq ft per 32 oz bottle (6.4 gal of spray at 5–10 gal per 1,000 sq ft).
Bonide Captain Jack's Lawnweed Brew Concentrate actúa sobre Dandelion, White clover, Broadleaf plantain, Henbit, Oxalis (creeping woodsorrel), Ground ivy (creeping charlie), entre otros.
Iron HEDTA (FeHEDTA) 26.52%, registrado con el n.º de registro EPA 67702-26-4.
Solo quemado — UC IPM indica que el hierro-HEDTA no mata las raíces, así que las malezas perennes vuelven
Real feedback
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Weed Control
NC State says it plainly: centipedegrass is sensitive to 2,4-D. It also wants no lime and almost no nitrogen — so the standard Southern routine is wrong three ways.

Weed Control
Common cannot take 2,4-D. Floratam cannot take atrazine. Bitterblue is weak on both. There is no St. Augustine answer until you know which one you have.

Weed Control
Moss is a symptom, not a cause. And the lime everyone reaches for is wrong more often than right — Illinois Extension says don't, without a soil test.

Weed Control
Nebraska: best performance at 60–75°F, and avoid glyphosate below 40°F. Purdue: hot dry weather thickens the leaf cuticle, so the plant physically resists uptake.

Weed Control
Purdue: differences in rainfastness among glyphosate products are generally small. What changes the rain-free period is the weed's size and species.

Weed Control
Clover spreads where nitrogen is short — it makes its own. Feed the turf and it recedes. If you still want it out, four actives work and one popular one is absent.

Weed Control
"Pet safe" is not a regulated claim, and most products sold under it kill grass as fast as weeds. The promise that is real: keep pets off until it dries.

Weed Control
Creeping Charlie and wild violet shrug off standard three-way weed killer for two different reasons. Both answer to triclopyr — and to October, not spring.

Product Reviews
There is no best weed killer for lawns, only the right one for your weed: the seven chemistries that matter, what each kills, and the one that kills grass too.

Product Reviews
The organic weed killer that works on lawns is iron — it burns broadleaf weeds and moss in hours without harming grass. What it won't do: kill the roots.

Fertilizer
Weed and feed does two jobs on two different calendars, so one bag rarely times both right. The month it works, and the lawns the label forbids.

Fertilizer
Your lawn is yellow and nitrogen is only one of nine causes — feeding the wrong one wastes a season. Diagnose by pattern, blade and timing first.

Weed Control
Killing dandelions without killing grass comes down to the taproot: the selective herbicides that reach it, and the month they actually work.
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 .