
Product Reviews
Best Pasture Weed Killer: The Weed Picks the Product
Arkansas trials give a product, a rate and a month for each weed — and for horsenettle, three consecutive years. Look up the weed before you buy a bottle.

Selective Broadleaf Herbicide (amine concentrate, acreage volume)
★★★★☆ 4.3/5
our editor rating how we score4.4/5 from 1,657 shoppers at Amazon — their number, not ours.
$34–$42
Typical price · 1 gallon concentrate — acreage-scale volume
Affiliate links — see our disclosure. Commissions never influence verdicts.
The same 2,4-D amine in a gallon rather than a quart, which is the size that makes sense once you are spraying a paddock rather than a lawn.
This is a volume decision rather than a chemistry one. The active is 2,4-D amine, the same working ingredient as the quart bottles, and the listing describes it for acreage operators — which is the honest use case. On a suburban lawn a gallon of 2,4-D concentrate is more than you will use before you should be questioning why you are spraying that much; on two to twenty acres of pasture or paddock it is the size that stops you re-ordering mid-job. The per-application cost falls sharply at this volume. Everything true of 2,4-D generally applies here: broadleaf only, nothing on grassy weeds or sedges, a heat restriction on most labels, and a target list that is narrower than the phrase broadleaf herbicide suggests. For pasture specifically, the grazing and haying restriction on the label is the number to read before the rate — UGA notes restrictions across products range from seven days to a year, and that a product with no beef restriction may still carry one for dairy.
Product type
Selective Broadleaf Herbicide (amine concentrate, acreage volume)
Active ingredient
2,4-D dimethylamine salt 11.84% (9.83% acid equivalent, 0.85 lb per gallon)
Price range
$34–$42
Coverage
1 gallon concentrate — acreage-scale volume
Best for
Pasture, paddock and acreage broadleaf control, where a quart bottle runs out mid-job
our editor rating
4.3 out of 5
Label read on the registrant's own PDF
EPA Reg. No. 228-238-7401
We read the printed label published by the company that holds the registration. EPA hosts no PDF for this one, so this is the best available text.
Label read 2026-08-02 on the registrant's own site. EPA Reg. 228-238-7401 — a distributor product: base registration 228-238 sold under Voluntary Purchasing Group's company number 7401, the same distributor code as the other Hi-Yield and Fertilome products here, so the printed label is a subset of the base label's uses. Dimethylamine salt of 2,4-D 11.84%, acid equivalent 9.83% = 0.85 lb per gallon. Note how low that acid equivalent is next to the agricultural esters we review at 5.5 lb/gal — the comparison that makes 'gallon volume' misleading on this shelf unless you compare acid equivalent rather than pack size.
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.
Matched against each state's actual disease, weed and pest pressure.
Application window: June through July, inside the same short window everything else happens in. There is no autumn second chance
Application window: May–June and September; high-altitude sun makes stressed turf easy to injure, so spot-treat rather than blanket-spray
Application window: 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
Application window: 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
Application window: May–June and September; fall beats creeping charlie best
Application window: October is the most effective month for broadleaf weeds; never apply above 80°F or to drought-stressed turf
Application window: 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
Application window: April into May and again in September–October; avoid July and August, when a tall fescue lawn here is already at its limit
Application window: June, then a narrow late-August to mid-September window. Maine's usable autumn is the shortest in New England
Application window: 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
Application window: May–June and September; autumn is the stronger window for perennial broadleaf weeds
Application window: Late May–June and September; autumn is the stronger window for perennial broadleaf weeds
Application window: April–May and September–October; skip summer sprays on drought-stressed fescue
Application window: June, then late August into September. In a sub-100-day valley there is no third chance
Application window: Late spring and again from late August through September, when perennial broadleaf weeds are moving reserves to the root
Application window: Late May into June, then late August through September. The autumn window closes earlier here than anywhere else in southern New England
Application window: May and September–October; autumn is the knockout window for perennial broadleaf weeds
Application window: Spring and early autumn; in the south skip the June heat entirely, and in the north the usable autumn window closes by early October
Application window: May and September–October; autumn is the knockout window for perennial broadleaf weeds
Application window: Early to mid-June, then late August into early September. There is no third opportunity
Application window: May–June and September; fall applications hit dandelion taproots hardest
Application window: March–May and September–October; the long mild shoulder seasons give more usable spray days than most states get
Application window: May and September — fall is the knockout window for perennial broadleaf weeds
Application window: Broadleaf work in May–June and again in September; the September pass is the one that holds, because the weed is moving reserves down
Application window: Early to mid-June, then late August into September, which is the pass that actually holds on perennial broadleaf weeds
Application window: May and September, avoiding the intense midsummer heat on the label
Application window: Late May through June, then a short late-August to mid-September window. Vermont's autumn window is the narrowest in New England
Application window: April–May and September–October; skip sprays on heat-stressed fescue in July and August
Application window: April–May and September–October; WSU caps applications at 80°F, stricter than the 85–90°F ceilings used elsewhere
Application window: 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
Application window: Early to mid-fall is the favourable window for dandelion and other perennial broadleaf weeds
Application window: 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
Hi-Yield 2,4-D Selective Weed Killer, 1 Gallon typically runs $34–$42, covering 1 gallon concentrate — acreage-scale volume.
Hi-Yield 2,4-D Selective Weed Killer, 1 Gallon targets thistle, buttercup, dandelion, plantain, ragweed.
2,4-D dimethylamine salt 11.84% (9.83% acid equivalent, 0.85 lb per gallon), registered under EPA Reg. No. 228-238-7401.
Far more product than a suburban lawn needs, and herbicide does not improve in storage
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Product Reviews
Arkansas trials give a product, a rate and a month for each weed — and for horsenettle, three consecutive years. Look up the weed before you buy a bottle.

Weed Control
Penn State: a cane tip touching the ground roots and makes a new plant. Mowing takes three to six passes a season for over a year — or 8 to 10 goats per acre.

Weed Control
Grazing restrictions run from seven days to a year, and beef and dairy differ. UGA: without cultural practices, herbicide use will not be beneficial.

Weed Control
UGA: fresh red maple leaves are not toxic, wilted ones are. Most toxic plants are unpalatable — so the danger is created by running out of forage, not by the plant.

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.
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