Herbicide label
Undercover Herbicide Label
Undercover (EPA 89168-54-89391) is a Group 27 mesotrione herbicide labeled for 11 crops. The label lists 41 controlled weeds, plus partial-control, suppression, and partner-control categories.
“This product is a systemic pre-emergence and post-emergence herbicide for selective contact and residual control of broadleaf weeds in labeled crops.”
Undercover label facts
- Product Undercover
- EPA Reg. No. 89168-54-89391
- Distributor Innvictis Crop Care LLC
- Active ingredient mesotrione
- MOA group 27
Crops on the Undercover label
Undercover is labeled for these 11 crops and uses, per the EPA label.
Weeds on the Undercover label
The Undercover label names 54 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 control41- amaranth, palmer
- amaranth, powell
- amaranth, spiny
- atriplex
- buffalobur
- carpetweed
- carrot, wild
- chickweed, common
- cocklebur, common
- galinsoga
- hemp
- horsenettle
- horseweed
- jimsonweed
- kochia
- lambsquarters, common
- mallow, venice
- mannagrass
- morningglory, entireleaf
- morningglory, ivyleaf
- morningglory, pitted
- mustard, wild
- nightshade, black
- nightshade, eastern black
- nightshade, hairy
- pigweed, redroot
- pigweed, smooth
- pigweed, tumble
- pusley, florida
- radish, wild
- ragweed, common
- ragweed, giant
- sesbania, hemp
- shepherd's-purse
- sida, prickly
- smartweed, ladysthumb
- smartweed, pale
- smartweed, pennsylvania
- sunflower, annual
- velvetleaf
- waterhemp, common
Partial control
partial10- signalgrass, broadleaf
- buckwheat, wild
- burcucumber
- crabgrass, large
- dandelion
- dock, curly
- knotweed, prostrate
- nutsedge, yellow
- pokeweed, common
- thistle, canada
Suppression
suppression3- bentgrass
- sharp-point fluellin
- toadrush
Controls with a tank-mix partner
needs partner1- burcucumber
Undercover 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.
Undercover FAQ
What weeds does Undercover control?
The Undercover label names 54 weeds, including palmer amaranth, powell amaranth, spiny amaranth, atriplex, buffalobur, and carpetweed. Control varies by crop, rate, and timing.
What crops is Undercover labeled for?
Undercover is labeled for 11 crops and uses, including field corn, soybeans, sorghum, seed corn, and popcorn.
What is the active ingredient in Undercover? Is it a generic?
Undercover's active ingredient is mesotrione (MOA Group 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.