Herbicide label
Flagstaff Herbicide Label
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.
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.
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
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.
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.
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.
Sources
Last updated 2026-09-30.