Herbicide label
Anthem Flex Herbicide Label
Anthem Flex (EPA 279-3464) is a Group 14 and 15 carfentrazone-ethyl and pyroxasulfone herbicide labeled for 19 crops. The label lists 42 controlled weeds, plus partial-control, suppression, and partner-control categories.
“ANTHEM FLEX herbicide contains pyroxasulfone which acts to inhibit very long-chain fatty acid synthesis as a Group 15 (WSSA)/ Group K3 (HRAC) herbicide.”
Anthem Flex label facts
- Product Anthem Flex
- EPA Reg. No. 279-3464
- Registrant FMC Corporation
- Active ingredient carfentrazone-ethyl and pyroxasulfone
- MOA group 14 and 15
Crops on the Anthem Flex label
Anthem Flex is labeled for these 19 crops and uses, per the EPA label.
Weeds on the Anthem Flex label
The Anthem Flex label names 79 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 control42- amaranth, palmer
- amaranth, powell
- barley, little
- barnyardgrass, common
- bittercress, hairy
- bluegrass, annual
- brome, downy
- brome, japanese
- canarygrass
- carpetweed
- cheat
- crabgrass, large
- crabgrass, smooth
- cress, mouse-ear
- rattail fescue
- foxtail, bristly
- foxtail, giant
- foxtail, green
- foxtail, yellow
- goosegrass
- johnsongrass, seedling
- knawel
- lambsquarters, common
- morningglory, ivyleaf
- morningglory, pitted
- nightshade, eastern black
- wild oats
- panicum, fall
- pigweed, redroot
- pigweed, smooth
- pigweed, tumble
- purslane, common
- pusley, florida
- red rice
- ryegrass, italian
- ryegrass, rigid
- sida, prickly
- speedwell, persian
- velvetleaf
- ventenata
- waterhemp, common
- witchgrass
Suppression
suppression28- barley, hare
- buckwheat, wild
- chickweed, common
- chickweed
- chickweed, mouseear
- cupgrass, southwestern
- cupgrass, woolly
- deadnettle, purple
- fleabane, hairy
- flixweed
- groundsel, common
- henbit
- horseweed
- jimsonweed
- kochia
- mayweed, chamomile
- millet, wild-proso
- mustard, wild
- nightshade, black
- nightshade, hairy
- nutsedge, yellow
- orach, spreading
- panicum, texas
- ragweed, common
- sandbur, longspine
- shattercane
- shepherd's-purse
- signalgrass, broadleaf
Controls with a tank-mix partner
needs partner12- kochia
- ragweed, common
- ragweed, giant
- pigweed
- smartweed, pennsylvania
- nightshade, black
- cocklebur, common
- morningglory
- thistle, russian
- lambsquarters
- sunflower
- morning glory, annual
Anthem Flex 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.
Anthem Flex FAQ
What weeds does Anthem Flex control?
The Anthem Flex label names 79 weeds, including palmer amaranth, powell amaranth, little barley, common barnyardgrass, hairy bittercress, and annual bluegrass. Control varies by crop, rate, and timing.
What crops is Anthem Flex labeled for?
Anthem Flex is labeled for 19 crops and uses, including field corn, soybeans, wheat, cotton, and sunflower.
What is the active ingredient in Anthem Flex? Is it a generic?
Anthem Flex's active ingredient is carfentrazone-ethyl and pyroxasulfone (MOA Group 14 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.