Herbicide label

Comet Herbicide Label

Comet (EPA 71368-87) is a Group 4 fluroxypyr 1-methylheptyl ester herbicide labeled for 12 crops. The label lists 20 controlled weeds, plus partial-control, suppression, and partner-control categories.

Comet label facts

Crops on the Comet label

Comet is labeled for these 12 crops and uses, per the EPA label.

Weeds on the Comet label

The Comet label names 33 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 control20
  • bedstraw, catchweed
  • bindweed, hedge
  • chickweed
  • clover, white
  • cocklebur, common
  • coffeeweed
  • dogbane, hemp
  • volunteer flax
  • grape
  • jimsonweed
  • kochia
  • prickly lettuce
  • mallow, venice
  • morningglory
  • potato, volunteer
  • puncturevine
  • purslane, common
  • ragweed, common
  • 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

Comet 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.

Comet FAQ

What weeds does Comet control?

The Comet label names 33 weeds, including catchweed bedstraw, hedge bindweed, chickweed, white clover, common cocklebur, and coffeeweed. Control varies by crop, rate, and timing.

What crops is Comet labeled for?

Comet is labeled for 12 crops and uses, including field corn, wheat, barley, sorghum, and oats.

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

Comet'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 2026-09-17.