Herbicide label

Flagstaff

Flagstaff (EPA 81927-61) is a Group 4 fluroxypyr 1-methylheptyl ester herbicide labeled for 11 crops. The label lists 21 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

Flagstaff label facts

Product Flagstaff
EPA Reg. No. 81927-61
Registrant Alligare, LLC
Active ingredient fluroxypyr 1-methylheptyl ester
MOA group 4

Crops on the Flagstaff label

Flagstaff is labeled for these 11 crops and uses, per the EPA label.

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Weeds on the Flagstaff label

The Flagstaff label names 34 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 control21

bedstraw, catchweed
bindweed, hedge
chickweed
clover, white
cocklebur, common
coffeeweed
dogbane, hemp
volunteer flax
grape species
jimsonweed
kochia
prickly lettuce
mallow, venice
morningglory
potato, volunteer
puncturevine
purslane, common
ragweed, common
ragweed, giant
sunflower
velvetleaf

Suppression

suppression13

bindweed, field
buckwheat, wild
volunteer canola
devilsclaw
horsetail, field
horseweed
knotweed
mallow, common
marshelder
mustard
nightshade, black
pennycress, field
thistle, russian

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Flagstaff 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.

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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, 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.

Flagstaff FAQ

What weeds does Flagstaff control?

The Flagstaff label names 34 weeds, including catchweed bedstraw, hedge bindweed, chickweed, white clover, common cocklebur, and coffeeweed. Control varies by crop, rate, and timing.

What crops is Flagstaff labeled for?

Flagstaff is labeled for 11 crops and uses, including field corn, wheat, barley, sorghum, and fallow.

What is the active ingredient in Flagstaff? Is it a generic?

Flagstaff's active ingredient is fluroxypyr 1-methylheptyl ester (MOA Group 4). 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 Flagstaff?

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 Flagstaff?

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.