Herbicide label

Sim-Trol 4L Herbicide Label

Sim-Trol 4L (EPA 35915-11-60063) is a Group 5 simazine herbicide labeled for 2 crops. The label lists 46 controlled weeds, plus partial-control, suppression, and partner-control categories.

Sim-Trol 4L label facts

Crops on the Sim-Trol 4L label

Sim-Trol 4L is labeled for these 2 crops and uses, per the EPA label.

Weeds on the Sim-Trol 4L label

The Sim-Trol 4L label names 47 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 control46
  • alyssum
  • amaranth
  • barnyardgrass, common
  • bassia, fivehook
  • bluegrass, annual
  • brome, downy
  • burclover
  • carpetweed
  • chickweed, common
  • crabgrass
  • rattail fescue
  • fiddleneck
  • filaree, broadleaf
  • fireweed
  • flixweed
  • foxtail
  • goosegrass
  • groundsel, common
  • henbit
  • junglerice
  • knawel
  • lambsquarters
  • morning glory, annual
  • mustard
  • mustard, wild
  • nightshade, black
  • panicum, fall
  • pepperweed
  • pepperweed, yellow flower
  • pineapple-weed
  • pigweed
  • prickly lettuce
  • purslane
  • ragweed, giant
  • redmaids
  • ryegrass, annual
  • shepherd's-purse
  • shieldcress
  • signalgrass
  • smartgrass
  • speedwell
  • tansymustard
  • thistle, russian
  • velvetleaf
  • wiregrass
  • witchgrass

Controls with a tank-mix partner

needs partner1
  • quackgrass

Sim-Trol 4L 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.

Sim-Trol 4L FAQ

What weeds does Sim-Trol 4L control?

The Sim-Trol 4L label names 47 weeds, including alyssum, amaranth, common barnyardgrass, fivehook bassia, annual bluegrass, and downy brome. Control varies by crop, rate, and timing.

What crops is Sim-Trol 4L labeled for?

Sim-Trol 4L is labeled for 2 crops and uses, including field corn and sweet corn.

What is the active ingredient in Sim-Trol 4L? Is it a generic?

Sim-Trol 4L's active ingredient is simazine (MOA Group 5). 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.