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)
Southern Ag Amine 2,4-D Weed Killer, 32 oz Review
★★★★☆ 4.4/5
our editor rating how we score4.4/5 from 8,063 shoppers at Amazon — their number, not ours.
$18–$24
Typical price · 32 oz concentrate; rate per label by site
Affiliate links — see our disclosure. Commissions never influence verdicts.
Straight 2,4-D amine at concentrate prices — the base broadleaf active behind most three-way lawn products, without the other two.
Our Verdict
If you already know 2,4-D is what you need, buying it on its own is far cheaper than buying it inside a branded three-way, and this is the version with the largest body of user feedback on the platform at over eight thousand ratings. The amine salt is the formulation used on turf and pasture, as against the ester concentrates sold for brush in non-crop areas. Where it earns its place is breadth of site: 2,4-D is labelled across lawns, pasture and cereal-type situations, which makes it the one bottle an acreage owner is most likely to reach for repeatedly. Two limits worth stating plainly. It is a broadleaf herbicide, so it does nothing to grassy weeds and nothing to sedges — those need different chemistry entirely. And on the two weeds people most often buy it for, extension shortlists do not name it: neither Penn State nor MSU lists 2,4-D among the effective actives for clover, and creeping Charlie and wild violet answer to triclopyr instead. Read the target list rather than assuming a broadleaf product covers every broadleaf.
✅ Pros
- 8,063 Amazon ratings — by far the largest evidence base of any herbicide on this site
- Around $21 for 32 oz of concentrate, a fraction of the cost per treated area of a ready-to-spray
- Amine salt, the formulation used on turf and pasture rather than the brush ester
- Labelled across a wide range of sites, which suits a property with more than a lawn
⚠️ Cons
- Broadleaf only — no effect on grassy weeds or sedges
- Not on extension's shortlist for clover, creeping Charlie or wild violet, which are common reasons people buy it
- Most 2,4-D products carry turf injury warnings above roughly 85–90°F
- Concentrate needs a sprayer and correct dilution; a surfactant is required by some labels
Product type
Selective Broadleaf Herbicide (amine concentrate)
Active ingredient
2,4-D, dimethylamine salt
Price range
$18–$24
Coverage
32 oz concentrate; rate per label by site
Best for
Broadleaf weeds across lawn, pasture and acreage where you want the active on its own rather than inside a branded blend
our editor rating
4.4 out of 5
Where our facts come from
Label read on the registrant's own PDF
EPA Reg. No. 48273-4-829
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.
What we found when we read it
Label read 2026-08-02 (registrant's own PDF, EPA Est. No. 829-FL-1). 2,4-D dimethylamine salt, 46.8%, acid equivalent 38.4% = 3.8 lb/gal. Sites on the front panel: pastures and rangeland, lawns, golf courses, cemeteries, parks and similar ornamental turf, fences, ditchbanks, roadsides, industrial sites. A separate SMALL GRAINS section covers wheat, barley, oats and rye and is the basis of weed-control-in-cereal-food-plots: it opens 'Not underseeded with a Legume crop', gives 1 1/3 to 2 pints/acre for barley, wheat and rye but only 1/2 to 1 pint for OATS, times the application at 'full tiller stage (usually 4 to 8 inches tall)', and bars application before tillering or from early boot to milk stage. Season caps: one post-emergence application per crop cycle, max 2 1/2 pints/acre per application, 3 2/3 pints/acre per crop cycle. Grazing: do not graze or feed treated forage within 2 weeks; do not use treated straw for livestock feed.
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.
Where This Product Matters
Matched against each state's actual disease, weed and pest pressure.
Alaska
Alaska hub →DandelionCommon chickweedBroadleaf and common plantainChickweed and other cool-wet-condition annuals in the Southeast
Application window: June through July, inside the same short window everything else happens in. There is no autumn second chance
Arkansas
Arkansas hub →Henbit
Application window: 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
Colorado
Colorado hub →Dandelion
Application window: May–June and September; high-altitude sun makes stressed turf easy to injure, so spot-treat rather than blanket-spray
Connecticut
Connecticut hub →DandelionBroadleaf plantain
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
Idaho
Idaho hub →Dandelion
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
Illinois
Illinois hub →Dandelion
Application window: May–June and September; fall beats creeping charlie best
Indiana
Indiana hub →Dandelion
Application window: October is the most effective month for broadleaf weeds; never apply above 80°F or to drought-stressed turf
Iowa
Iowa hub →Dandelion
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
Kansas
Kansas hub →Henbit and other winter annuals, which own an eastern Kansas lawn in MarchDandelion
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
Kentucky
Kentucky hub →Henbit
Application window: April–May and September–October; autumn is the knockout window for the wild garlic that defines a Kentucky winter lawn
Maine
Maine hub →DandelionBroadleaf plantainCommon chickweed
Application window: June, then a narrow late-August to mid-September window. Maine's usable autumn is the shortest in New England
Massachusetts
Massachusetts hub →Dandelion
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
Michigan
Michigan hub →Dandelion
Application window: May–June and September; autumn is the stronger window for perennial broadleaf weeds
Minnesota
Minnesota hub →Dandelion
Application window: Late May–June and September; autumn is the stronger window for perennial broadleaf weeds
Missouri
Missouri hub →HenbitDandelion
Application window: April–May and September–October; skip summer sprays on drought-stressed fescue
Montana
Montana hub →DandelionCommon plantainCanada thistle and other listed noxious weeds pushing in from unmanaged edges
Application window: June, then late August into September. In a sub-100-day valley there is no third chance
Nebraska
Nebraska hub →DandelionHenbit and other winter annuals
Application window: Late spring and again from late August through September, when perennial broadleaf weeds are moving reserves to the root
New Hampshire
New Hampshire hub →DandelionBroadleaf plantainCommon chickweed
Application window: Late May into June, then late August through September. The autumn window closes earlier here than anywhere else in southern New England
New Jersey
New Jersey hub →DandelionBroadleaf plantain
Application window: May and September–October; autumn is the knockout window for perennial broadleaf weeds
New Mexico
New Mexico hub →Kochia and Russian thistle at the dry margins
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
New York
New York hub →Dandelion
Application window: May and September–October; autumn is the knockout window for perennial broadleaf weeds
North Carolina
North Carolina hub →Henbit
Application window: April–May and September–October; avoid spraying heat-stressed fescue in July–August
North Dakota
North Dakota hub →DandelionCommon plantain
Application window: Early to mid-June, then late August into early September. There is no third opportunity
Ohio
Ohio hub →DandelionBroadleaf plantain
Application window: May–June and September; fall applications hit dandelion taproots hardest
Oklahoma
Oklahoma hub →Henbit
Application window: 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
Oregon
Oregon hub →Dandelion
Application window: March–May and September–October; the long mild shoulder seasons give more usable spray days than most states get
Pennsylvania
Pennsylvania hub →Dandelion
Application window: May and September — fall is the knockout window for perennial broadleaf weeds
Rhode Island
Rhode Island hub →DandelionBroadleaf plantain
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
South Dakota
South Dakota hub →DandelionCommon plantain
Application window: Early to mid-June, then late August into September, which is the pass that actually holds on perennial broadleaf weeds
Tennessee
Tennessee hub →Henbit
Application window: April–May and September–October; skip sprays on drought-stressed summer fescue
Texas
Texas hub →Henbit
Application window: April–early June and September–October; avoid herbicides above 90°F
Utah
Utah hub →Dandelion
Application window: May and September, avoiding the intense midsummer heat on the label
Vermont
Vermont hub →DandelionBroadleaf plantainCommon chickweed
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
Virginia
Virginia hub →Dandelion
Application window: April–May and September–October; skip sprays on heat-stressed fescue in July and August
Washington
Washington hub →Dandelion
Application window: April–May and September–October; WSU caps applications at 80°F, stricter than the 85–90°F ceilings used elsewhere
West Virginia
West Virginia hub →Broadleaf plantain
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
Wisconsin
Wisconsin hub →DandelionBroadleaf plantain
Application window: Early to mid-fall is the favourable window for dandelion and other perennial broadleaf weeds
Wyoming
Wyoming hub →DandelionCommon plantainCanada thistle and other listed noxious species moving in from unmanaged edges
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
Common Questions
How much does Southern Ag Amine 2,4-D Weed Killer, 32 oz cost?
Southern Ag Amine 2,4-D Weed Killer, 32 oz typically runs $18–$24, covering 32 oz concentrate; rate per label by site.
What does Southern Ag Amine 2,4-D Weed Killer, 32 oz treat?
Southern Ag Amine 2,4-D Weed Killer, 32 oz targets dandelion, plantain, chickweed, henbit, thistle.
What is the active ingredient in Southern Ag Amine 2,4-D Weed Killer, 32 oz?
2,4-D, dimethylamine salt, registered under EPA Reg. No. 48273-4-829.
What is the biggest downside of Southern Ag Amine 2,4-D Weed Killer, 32 oz?
Broadleaf only — no effect on grassy weeds or sedges
Real feedback
Customer Reviews
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