Herbicide label
Instigate Herbicide Label
Instigate (EPA 352-873) is a Group 2 and 27 mesotrione and rimsulfuron herbicide labeled for 2 crops. The label lists 33 controlled weeds, plus partial-control, suppression, and partner-control categories.
“INSTIGATE® is a selective herbicide for burndown and residual control of certain annual grass and broadleaf weeds.”
Instigate label facts
- Product Instigate
- EPA Reg. No. 352-873
- Registrant Corteva Agriscience
- Active ingredient mesotrione and rimsulfuron
- MOA group 2 and 27
Crops on the Instigate label
Instigate is labeled for these 2 crops and uses, per the EPA label.
Weeds on the Instigate label
The Instigate label names 85 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 control33- amaranth, spiny
- barnyardgrass, common
- buffalobur
- chamomile, false
- chickweed, common
- cocklebur, common
- filaree, redstem
- foxtail, bristly
- foxtail, giant
- foxtail, green
- foxtail, yellow
- galinsoga
- henbit
- jimsonweed
- kochia (ALS-sensitive)
- lambsquarters, common
- horseweed
- mustard, birdsrape
- mustard, black
- mustard, wild
- nightshade, eastern black
- nightshade, hairy
- panicum, fall
- pigweed, redroot
- pigweed, smooth
- pokeweed, common
- purslane, common
- ragweed, common
- ryegrass, italian
- smartweed, annual
- sunflower
- velvetleaf
- volunteer wheat
Partial control
partial15- amaranth, palmer
- amaranth, powell
- bluegrass, annual
- burcucumber
- carpetweed
- crabgrass, large
- kochia
- morningglory, ivyleaf
- morningglory, pitted
- wild oats
- pigweed, prostrate
- ragweed, giant
- signalgrass, broadleaf
- thistle, russian
- waterhemp, common
Controls with a tank-mix partner
needs partner41- alfalfa
- barley
- buckwheat, wild
- burcumber
- butterweed
- carrot, wild
- crabgrass, large (1/2")
- cupgrass, woolly (1")
- dandelion (6" dia)
- deadnettle, purple
- hemp
- horsenettle
- nutsedge, yellow
- wild oats
- pigweed, tumble
- radish, wild
- ragweed, giant
- shattercane
- shepherd's-purse
- sida, prickly
- signalgrass, broadleaf
- thistle, canada
- thistle, russian, seedling
- waterhemp, common
- dock, curly
- johnsongrass, seedling
- millet, wild-proso
- pusley, FL
- sesbania, hemp
- stinkgrass
- mallow, venice
- quackgrass
- knotweed, prostrate
- sandbur, field
- crowfootgrass
- cupgrass, prairie
- cupgrass, southwestern
- goosegrass
- panicum, browntop
- witchgrass
- sicklepod
Instigate 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.
Instigate FAQ
What weeds does Instigate control?
The Instigate label names 85 weeds, including spiny amaranth, common barnyardgrass, buffalobur, false chamomile, common chickweed, and common cocklebur. Control varies by crop, rate, and timing.
What crops is Instigate labeled for?
Instigate is labeled for 2 crops and uses, including field corn and corn silage.
What is the active ingredient in Instigate? Is it a generic?
Instigate's active ingredient is mesotrione and rimsulfuron (MOA Group 2 and 27). 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.