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Selective Post-Emergent Herbicide (contact-acting, broadleaf and sedge)
BASF Basagran T/O Herbicide, 1 Gallon Review
★★★★☆ 4/5
our editor rating how we score4.1/5 from 37 shoppers at Amazon — their number, not ours.
$76–$90
Typical price · 1 gallon concentrate — professional volume
Affiliate links — see our disclosure. Commissions never influence verdicts.
One of very few actives that covers yellow nutsedge and broadleaf weeds together — and it works by contact, which decides how you must use it.
Our Verdict
Bentazon occupies an unusual position: it is active on yellow nutsedge and on a broadleaf list, which almost no other single homeowner-accessible product does, and it is tolerated by a wide range of turf species. The catch is the mode of action. Bentazon is contact-acting rather than strongly translocated, which has three consequences you cannot design around. Coverage must be thorough, because untouched tissue is untreated tissue. It works on young, actively growing sedge and disappoints on a mature stand. And because it does not move well into nutsedge tubers, it suppresses rather than eradicates — for an established nutsedge problem halosulfuron is the better tool, and bentazon is the choice when you also have broadleaves to deal with in the same pass. A surfactant is required by the label for acceptable results. Practical reservations: a gallon at around $82 is professional volume for a homeowner, and 37 ratings is a thin evidence base compared with the sedge and broadleaf products beside it.
✅ Pros
- Covers yellow nutsedge and broadleaf weeds in one product, which is rare
- Tolerated by a broad range of turfgrass species
- Different mode of action from sulfonylureas, useful where those have been used repeatedly
- Contact action means visible response quickly
⚠️ Cons
- Contact-acting — thorough coverage is mandatory and missed tissue is untreated
- Suppresses rather than eradicates nutsedge, because it does not move well into tubers
- A gallon at around $82 is professional volume for a home lawn
- Only 37 Amazon ratings
- Label requires a surfactant for acceptable control
Product type
Selective Post-Emergent Herbicide (contact-acting, broadleaf and sedge)
Active ingredient
Sodium salt of bentazon 44% (equivalent to 4 lb bentazon per gallon)
Price range
$76–$90
Coverage
1 gallon concentrate — professional volume
Best for
A lawn with young yellow nutsedge and broadleaf weeds together, where one thorough pass can address both
our editor rating
4 out of 5
Where our facts come from
Label read on EPA's label database
EPA Reg. No. 7969-326
We opened this product's accepted label on EPA's own Pesticide Product Label System — the strongest source available for what a product is registered to do.
What we found when we read it
Full label read 2026-08-02 on EPA PPLS (accepted 2024-09-11). 'Basagran T&O Herbicide', EPA Reg. 7969-326, sodium salt of bentazon 44%, stated on the label as equivalent to 4 pounds per gallon bentazon. Noted as a MASTER LABEL, which means a specific retail jug may print a narrower site or weed list than the registration allows — check the booklet on the container against any rate here.
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.
Alabama
Alabama hub →Nutsedge
Application window: April–May and September, and check every label against centipede before it leaves the shelf
Alaska
Alaska hub →Common chickweedWhite 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
Colorado
Colorado hub →White 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 →White cloverYellow nutsedge (the wet low corners of a till lawn)
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 →Yellow nutsedge (the wet clay corners in the north and the irrigated sand in the south, for opposite reasons)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
Idaho
Idaho hub →White 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
Indiana
Indiana hub →White 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 →White 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 →Yellow nutsedge
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
Louisiana
Louisiana hub →Nutsedge
Application window: March–May and October–November; avoid applications above 85°F and never on drought-stressed St. Augustine
Maine
Maine hub →White cloverCommon 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 →White 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 →White clover
Application window: May–June and September; autumn is the stronger window for perennial broadleaf weeds
Mississippi
Mississippi hub →Nutsedge
Application window: April–May and September, avoiding the midsummer heat restrictions on most labels
Missouri
Missouri hub →White clover
Application window: April–May and September–October; skip summer sprays on drought-stressed fescue
Montana
Montana hub →White clover
Application window: June, then late August into September. In a sub-100-day valley there is no third chance
Nebraska
Nebraska hub →White cloverYellow nutsedge in the irrigated low spots
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 →White cloverCommon 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 →White clover
Application window: May and September–October; autumn is the knockout window for perennial broadleaf weeds
New York
New York hub →White clover
Application window: May and September–October; autumn is the knockout window for perennial broadleaf weeds
North Carolina
North Carolina hub →White clover
Application window: April–May and September–October; avoid spraying heat-stressed fescue in July–August
North Dakota
North Dakota hub →White clover
Application window: Early to mid-June, then late August into early September. There is no third opportunity
Ohio
Ohio hub →White clover
Application window: May–June and September; fall applications hit dandelion taproots hardest
Pennsylvania
Pennsylvania hub →White clover
Application window: May and September — fall is the knockout window for perennial broadleaf weeds
Rhode Island
Rhode Island hub →White cloverYellow nutsedge (the wet hollows in till lawns)
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 →Nutsedge
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
South Dakota
South Dakota hub →White 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 →Nutsedge
Application window: April–May and September–October; skip sprays on drought-stressed summer fescue
Texas
Texas hub →Nutsedge
Application window: April–early June and September–October; avoid herbicides above 90°F
Vermont
Vermont hub →White cloverCommon 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 →NutsedgeWhite clover
Application window: April–May and September–October; skip sprays on heat-stressed fescue in July and August
Washington
Washington hub →White 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 cloverYellow nutsedge in the wet spots the fragipan creates
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 →White clover
Application window: Early to mid-fall is the favourable window for dandelion and other perennial broadleaf weeds
Wyoming
Wyoming hub →White 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 BASF Basagran T/O Herbicide, 1 Gallon cost?
BASF Basagran T/O Herbicide, 1 Gallon typically runs $76–$90, covering 1 gallon concentrate — professional volume.
What does BASF Basagran T/O Herbicide, 1 Gallon treat?
BASF Basagran T/O Herbicide, 1 Gallon targets yellow nutsedge, clover, chickweed, ragweed.
What is the active ingredient in BASF Basagran T/O Herbicide, 1 Gallon?
Sodium salt of bentazon 44% (equivalent to 4 lb bentazon per gallon), registered under EPA Reg. No. 7969-326.
What is the biggest downside of BASF Basagran T/O Herbicide, 1 Gallon?
Contact-acting — thorough coverage is mandatory and missed tissue is untreated
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