Herbicide label

Anthem Flex

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.

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Official EPA label (PDF)

“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 EPA label, Reg. No. 279-3464

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.

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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

suppression33

barley, hare
buckwheat, wild
chickweed, common
chickweed
chickweed, mouseear
cupgrass, southwestern
cupgrass, woolly
deadnettle, purple
fleabane, hairy
flixweed
groundsel, common
henbit
horseweed
jimsonweed
kochia
lambsquarters, common
mayweed, chamomile
millet, wild-proso
morningglory, ivyleaf
morningglory, pitted
mustard, wild
nightshade, black
nightshade, eastern black
nightshade, hairy
nutsedge, yellow
orach, spreading
panicum, texas
ragweed, common
sandbur, longspine
shattercane
shepherd's-purse
signalgrass, broadleaf
velvetleaf

Controls with a tank-mix partner

needs partner16

velvetleaf
kochia
lambsquarters, common
ragweed, common
ragweed, giant
pigweed
waterhemp, common
smartweed, pennsylvania
nightshade, black
cocklebur, common
morningglory
thistle, russian
lambsquarters
sunflower
amaranth, palmer
morning glory, annual

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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 and your soil texture.

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Plant-back and rotation

Your interval depends on your application rate, the rotational crop, and your state, region, and rainfall — some intervals differ in AK, AL, AR, AZ, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, and WY.

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.

What's the plant-back interval after Anthem Flex?

It depends on your rotational crop, application rate, and region, so the label gives a table, not one number. Build a program and FieldMarshal gives you the exact interval for your rotation from the label line, so you can verify it.

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Can I tank-mix Anthem Flex?

It depends on your target weeds, crop stage, and which partners the label approves. Build a program and FieldMarshal checks the label for approved partners and gives the condition on each, so you can verify it.