Herbicide label
Staunch II Herbicide Label
Staunch II (EPA 62719-679-55467) is a Group 2, 4, and 15 acetochlor, clopyralid, and flumetsulam herbicide labeled for 3 crops. The label lists 64 controlled weeds, plus partial-control, suppression, and partner-control categories.
“Staunch II is a preemergence herbicide for which spray adjuvants have little or no influence on performance.”
Staunch II label facts
- Product Staunch II
- EPA Reg. No. 62719-679-55467
- Distributor Tenkoz Inc
- Active ingredient acetochlor, clopyralid, and flumetsulam
- MOA group 2, 4, and 15
Crops on the Staunch II label
Staunch II is labeled for these 3 crops and uses, per the EPA label.
Weeds on the Staunch II label
The Staunch II label names 64 weeds and rates each by how the product handles it: full control, partial control, suppression, or control with a tank-mix partner. A weed can fall at more than one level, because control varies by crop, rate, and timing.
Controls
full control64- barnyardgrass, common
- crabgrass
- crowfootgrass
- cupgrass, prairie
- cupgrass, southwestern
- cupgrass, woolly
- foxtail, bristly
- foxtail, giant
- foxtail, green
- foxtail, robust (purple, white)
- foxtail, yellow
- goosegrass
- johnsongrass, seedling
- foxtail, millet
- millet, wild-proso
- nutsedge, yellow
- panicum, browntop
- panicum, fall
- panicum, texas
- red rice
- sandbur, field
- shattercane
- signalgrass, broadleaf
- sprangletop, red
- witchgrass
- amaranth, palmer
- beggarweed, florida
- buckwheat, wild
- carpetweed
- chickweed, common
- clover, red
- cocklebur, common
- galinsoga
- henbit
- horseweed
- jimsonweed
- kochia
- ladysthumb
- lambsquarters, common
- mallow, venice
- morningglory, ivyleaf
- morningglory, tall
- mustard, wild
- nightshade, black
- pigweed, redroot
- pigweed, smooth
- poinsettia, wild
- puncturevine
- purslane, common
- pusley, florida
- ragweed, common
- ragweed, giant
- shepherd's-purse
- sicklepod
- sida, prickly
- smartweed, pennsylvania
- spurge, nodding
- spurge, prostrate
- spurge, spotted
- sunflower, annual
- thistle, canada
- velvetleaf
- waterhemp, common
- wormwood, biennial
Staunch II rates and plant-back
The label answers both with a table, not a single number. Here is what drives each answer.
Application rate
Your rate depends on your crop.
Get the rate for your field: build a program and FieldMarshal gives you the exact per-acre rate for your crop from the label line.
Plant-back and rotation
Your interval depends on your application rate and the rotational crop.
Get the interval for your rotation: build a program and FieldMarshal gives you the exact plant-back for your rotational crop from the label line.
Staunch II FAQ
What weeds does Staunch II control?
The Staunch II label names 64 weeds, including common barnyardgrass, crabgrass, crowfootgrass, prairie cupgrass, southwestern cupgrass, and woolly cupgrass. Control varies by crop, rate, and timing.
What crops is Staunch II labeled for?
Staunch II is labeled for 3 crops and uses, including field corn, corn silage, and seed corn.
What is the active ingredient in Staunch II? Is it a generic?
Staunch II's active ingredient is acetochlor, clopyralid, and flumetsulam (MOA Group 2, 4, and 15). Other products list the same active ingredient; rates, formulations, and labeled crops differ — verify each on its own label.
Sources
Last updated 2026-09-30.