Herbicide label
Classic Herbicide Label
Classic (EPA 5481-681) is a Group 2 chlorimuron herbicide labeled for 2 crops. The label lists 44 controlled weeds, plus partial-control, suppression, and partner-control categories.
Classic label facts
- Product Classic
- EPA Reg. No. 5481-681
- Registrant Amvac Chemical Corporation
- Active ingredient chlorimuron
- MOA group 2
Crops on the Classic label
Classic is labeled for these 2 crops and uses, per the EPA label.
Weeds on the Classic label
The Classic label names 60 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 control44- beggarticks
- bittercress, small-flowered
- buttercup, smallflower
- butterweed
- cocklebur, common
- cowpea
- dandelion
- deadnettle, purple
- henbit
- jerusalem artichoke
- jimsonweed
- lambsquarters
- prickly lettuce
- horseweed
- morningglory, entireleaf
- morningglory, ivyleaf
- morningglory, pitted
- morningglory, smallflower
- morningglory, tall
- mustard, tansy
- mustard, wild
- nutsedge, yellow
- pennycress, field
- pepperweed
- pigweed, redroot
- pigweed, smooth
- poinsettia, wild
- ragweed, common
- ragweed, giant
- rocket, yellow
- sesbania, hemp
- shepherd's-purse
- sicklepod
- smartweed, ladysthumb
- smartweed, pennsylvania
- speedwell, field
- speedwell, purslane
- sunflower
- thistle, canada
- velvetleaf
- wallflower, bushy
- whitlowgrass
- beggarweed, florida
- starbur, bristly
Suppression
suppression9- barnyardgrass, common
- burcucumber
- chickweed, common
- crabgrass
- foxtail
- nutsedge, purple
- panicum
- sida, prickly
- dayflower, benghal
Controls with a tank-mix partner
needs partner7- milkweed, common
- buffalobur
- corn, volunteer
- nightshade, eastern black
- pigweed, rough
- signalgrass, broadleaf
- garlic, wild
Classic 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.
Classic FAQ
What weeds does Classic control?
The Classic label names 60 weeds, including beggarticks, small-flowered bittercress, smallflower buttercup, butterweed, common cocklebur, and cowpea. Control varies by crop, rate, and timing.
What crops is Classic labeled for?
Classic is labeled for 2 crops and uses, including soybeans and peanut.
What is the active ingredient in Classic? Is it a generic?
Classic's active ingredient is chlorimuron (MOA Group 2). 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.