Weed Control
Wheat and Oat Food Plot Weed Control: A Stage, Not a Date
A cereal plot reverses every rule from a clover plot. 2,4-D goes on-label, clethodim kills the crop, and one clause about legumes rules out most mixed plots.
Selective Broadleaf Herbicide (three-way with MCPA)
Liquid Harvest Lawn Weed Killer Three-Way Concentrate, 32 oz Review
★★★★☆ 4/5
our editor rating how we score4.4/5 from 103 shoppers at Amazon — their number, not ours.
$34–$42
Typical price · 1 quart covers up to 42,000 sq ft per the label, so a 32 oz bottle treats a large lawn many times over; spot rate is 4 fl oz per gallon of water
Affiliate links — see our disclosure. Commissions never influence verdicts.
A three-way built on MCPA rather than MCPP, which is the substitution most consumer bottles do not make.
Our Verdict
The interest here is the third ingredient. Almost every consumer three-way is 2,4-D plus dicamba plus MCPP (mecoprop); this one is 2,4-D plus dicamba plus MCPA, at 30.89%, 2.77% and 8.23%. MCPA and MCPP are different acids, and the difference matters in one place we write about: University of Nebraska Extension notes MCPA is relatively safe on young wheat and would be preferred over 2,4-D when spraying before a cereal is well tillered. So MCPA is the active a cereal food plot wants — but read carefully, because this is a LAWN three-way and its 2,4-D and dicamba content rule it out for a cereal plot regardless of the MCPA. It does not close that gap. What it is, having now read the label, is a genuinely agricultural-channel concentrate wearing a lawn label: rates are quoted per acre, one quart covers up to 42,000 sq ft, and the signal word is WARNING rather than the CAUTION on most consumer three-ways. That is the honest trade — better cost per area than any ready-to-use, with a label that assumes you will measure. The one hard limit is the grass: St. Augustine and centipedegrass are permitted only while dormant and only in Texas, Louisiana and Mississippi, which rules the product out for most Florida and South Carolina lawns.
✅ Pros
- Three-way built on MCPA rather than MCPP, which is unusual on a consumer shelf
- 30.89% 2,4-D — a genuine concentrate rather than a diluted ready-to-use
- One quart covers up to 42,000 sq ft, so cost per area is far below a ready-to-use
- Dicamba included, which covers weeds 2,4-D alone is weak on
- Manufacturer publishes the full label, so every rate and restriction is checkable
⚠️ Cons
- St. Augustine and centipedegrass only when dormant, and only in TX, LA and MS — off-label on those grasses anywhere else
- Signal word is WARNING, a step above the CAUTION on most consumer three-ways
- Does NOT solve the cereal-plot MCPA gap: the 2,4-D and dicamba in it rule out that use
- Rates are written per acre, so a homeowner has to do the arithmetic
- Only 103 ratings, against thousands on the established three-ways here
- Dicamba is root-absorbed — keep it outside the dripline of trees and shrubs
Product type
Selective Broadleaf Herbicide (three-way with MCPA)
Active ingredient
2,4-D 30.89% + MCPA 8.23% + Dicamba 2.77%
Price range
$34–$42
Coverage
1 quart covers up to 42,000 sq ft per the label, so a 32 oz bottle treats a large lawn many times over; spot rate is 4 fl oz per gallon of water
Best for
Broadleaf weeds across a whole lawn, where a concentrate's cost per area matters
our editor rating
4 out of 5
Where our facts come from
Label read on the registrant's own PDF
EPA Reg. No. 89442-22-72838
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 2026-08-04 from Sanco Industries' own published PDF, which resolves the gap this record previously documented. EPA Reg. 89442-22-72838 — three parts, so it IS the distributor version of 89442-22 that our earlier note predicted; under FIFRA a distributor label may omit uses but never add them. Actives confirmed as printed: 2,4-D DMA salt 30.89% (2.38 lb ae/gal), MCPA DMA salt 8.23% (0.63 lb ae/gal), dicamba DMA salt 2.77% (0.22 lb ae/gal), HRAC Group 4. Signal word is WARNING, not the CAUTION most consumer three-ways carry. The restriction that matters most is a species one: apply only to DORMANT St. Augustine (common, Raleigh and Seville, grown in TX, LA and MS only) and DORMANT centipedegrass (TX, LA and MS only) — so this is off-label for those two grasses anywhere else, and off-label on them while actively growing even there. Also: do not spray on dichondra or where desirable clovers are present; carpetgrass takes spot treatment only above 80°F; spot rate is 4 fl oz per gallon of water; maximum 3.3 qt/acre per application and 6.6 qt/acre per year; reseed no sooner than 3–4 weeks; do not mow 1–2 days either side, no rain within 4 hours, delay irrigation 24 hours; aerial application prohibited. No state-specific restriction and no restricted-use classification appears on the label.
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 plantainWhite cloverChickweed 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 →DandelionWhite cloverClover and Banks grass mites (dry winters and hot dry summers)
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 →DandelionWhite cloverBroadleaf 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
Delaware
Delaware hub →White clover
Application window: 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
Florida
Florida hub →Application window: March–May and October–November; avoid applications above 85°F
⚖️ Do not use this on a St. Augustine lawn in Florida. The label permits St. Augustine only when dormant and only in TX, LA and MS — Florida is not on that list, and St. Augustine is the state's dominant grass, so for most Florida lawns this product is off-label rather than merely risky.
Idaho
Idaho hub →DandelionWhite clover
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 →DandelionWhite clover
Application window: October is the most effective month for broadleaf weeds; never apply above 80°F or to drought-stressed turf
Iowa
Iowa hub →DandelionWhite clover
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
Louisiana
Louisiana hub →Application window: March–May and October–November; avoid applications above 85°F and never on drought-stressed St. Augustine
⚖️ Louisiana is one of the three states where the label allows St. Augustine and centipedegrass at all — but only while fully dormant. On an actively growing St. Augustine lawn it is still off-label here.
Maine
Maine hub →DandelionWhite cloverBroadleaf plantainCommon chickweed
Application window: June, then a narrow late-August to mid-September window. Maine's usable autumn is the shortest in New England
Maryland
Maryland hub →White clover
Application window: April–May and September–October; autumn is the knockout window for the ground ivy and violet the Piedmont is full of
Massachusetts
Massachusetts hub →DandelionWhite clover
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 →DandelionWhite clover
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 →HenbitDandelionWhite clover
Application window: April–May and September–October; skip summer sprays on drought-stressed fescue
Montana
Montana hub →DandelionWhite cloverCommon plantain
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 annualsWhite clover
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 →DandelionWhite cloverBroadleaf 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 →DandelionWhite cloverBroadleaf plantain
Application window: May and September–October; autumn is the knockout window for perennial broadleaf weeds
New York
New York hub →DandelionWhite clover
Application window: May and September–October; autumn is the knockout window for perennial broadleaf weeds
North Carolina
North Carolina hub →HenbitWhite clover
Application window: April–May and September–October; avoid spraying heat-stressed fescue in July–August
North Dakota
North Dakota hub →DandelionCommon plantainWhite clover
Application window: Early to mid-June, then late August into early September. There is no third opportunity
Ohio
Ohio hub →DandelionWhite cloverBroadleaf 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 →DandelionWhite clover
Application window: May and September — fall is the knockout window for perennial broadleaf weeds
Rhode Island
Rhode Island hub →DandelionWhite cloverBroadleaf 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 Carolina
South Carolina hub →Application window: 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
⚖️ Centipedegrass is South Carolina's dominant lawn grass, and this label permits centipede only when dormant and only in TX, LA and MS. That makes it the wrong three-way for a typical South Carolina lawn.
South Dakota
South Dakota hub →DandelionCommon plantainWhite clover
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
⚖️ Texas is one of the three states named on the label for St. Augustine and centipedegrass, and only while dormant. On bermudagrass the label is broader, and it allows up to 4 pints per acre where the bermuda is dormant.
Utah
Utah hub →Dandelion
Application window: May and September, avoiding the intense midsummer heat on the label
Vermont
Vermont hub →DandelionWhite cloverBroadleaf 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 →DandelionWhite clover
Application window: April–May and September–October; skip sprays on heat-stressed fescue in July and August
Washington
Washington hub →DandelionWhite clover
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 →White cloverBroadleaf 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 →DandelionWhite cloverBroadleaf plantain
Application window: Early to mid-fall is the favourable window for dandelion and other perennial broadleaf weeds
Wyoming
Wyoming hub →DandelionCommon plantainWhite clover
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 Liquid Harvest Lawn Weed Killer Three-Way Concentrate, 32 oz cost?
Liquid Harvest Lawn Weed Killer Three-Way Concentrate, 32 oz typically runs $34–$42, covering 1 quart covers up to 42,000 sq ft per the label, so a 32 oz bottle treats a large lawn many times over; spot rate is 4 fl oz per gallon of water.
What does Liquid Harvest Lawn Weed Killer Three-Way Concentrate, 32 oz treat?
Liquid Harvest Lawn Weed Killer Three-Way Concentrate, 32 oz targets Dandelion, Clover, Plantain, Chickweed, Henbit, Broadleaf weeds.
What is the active ingredient in Liquid Harvest Lawn Weed Killer Three-Way Concentrate, 32 oz?
2,4-D 30.89% + MCPA 8.23% + Dicamba 2.77%, registered under EPA Reg. No. 89442-22-72838.
What is the biggest downside of Liquid Harvest Lawn Weed Killer Three-Way Concentrate, 32 oz?
St. Augustine and centipedegrass only when dormant, and only in TX, LA and MS — off-label on those grasses anywhere else
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