Herbicide label

Triflurex HFP Herbicide Label

Triflurex HFP (EPA 66222-46) is a Group 3 trifluralin herbicide labeled for 25 crops. The label lists 39 controlled weeds, plus partial-control, suppression, and partner-control categories.

“Triflurex® HFP is a selective herbicide for the pre-emergence control of annual grasses and broadleaf weeds.”

— Triflurex HFP EPA label, Reg. No. 66222-46

Triflurex HFP label facts

Crops on the Triflurex HFP label

Triflurex HFP is labeled for these 25 crops and uses, per the EPA label.

Weeds on the Triflurex HFP label

The Triflurex HFP label names 41 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 control39
  • barley
  • barnyardgrass, common
  • bindweed, field
  • brachiaria
  • canarygrass
  • carpetweed
  • cheat
  • chickweed
  • crabgrass
  • cupgrass, woolly
  • dodder
  • goosefoot
  • guineagrass
  • itchgrass
  • johnsongrass
  • johnsongrass, seedling
  • junglerice
  • knotweed
  • kochia
  • lambsquarters
  • stinging nettle
  • panicum, fall
  • panicum, texas
  • pigweed
  • puncturevine
  • purslane, common
  • pusley, florida
  • sandbur
  • shattercane
  • sprangletop
  • stinkgrass
  • thistle, russian
  • blackgrass
  • bluegrass, annual
  • brome, downy
  • fiddleneck
  • henbit
  • ryegrass, italian
  • foxtail

Partial control

partial1
  • red rice

Suppression

suppression1
  • amaranth, palmer

Triflurex HFP 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.

Triflurex HFP FAQ

What weeds does Triflurex HFP control?

The Triflurex HFP label names 41 weeds, including barley, common barnyardgrass, field bindweed, brachiaria, canarygrass, and carpetweed. Control varies by crop, rate, and timing.

What crops is Triflurex HFP labeled for?

Triflurex HFP is labeled for 25 crops and uses, including field corn, soybeans, cotton, sunflower, and potato.

What is the active ingredient in Triflurex HFP? Is it a generic?

Triflurex HFP's active ingredient is trifluralin (MOA Group 3). 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.