Herbicide label
Classic
Classic (EPA 352-436) is a Group 2 chlorimuron herbicide labeled for 2 crops. The label lists 38 controlled weeds, plus partial-control, suppression, and partner-control categories.
Build the herbicide program for your field
Tell FieldMarshal your crop, weeds, and rotation. Get back a complete program, products, rates, plant-back, and tank-mix, with every line cited to the label so you can verify it yourself.
Built from 1,700+ EPA herbicide labels and 49 state weed-control guides. Made for crop advisors and growers.
Free to create your account. Every line cited to the label, so you can check it against the source.
Classic label facts
- Product Classic
- EPA Reg. No. 352-436
- Registrant Corteva Agriscience
- Active ingredient chlorimuron
- MOA group 2
Crops on the Classic label
Classic is labeled for these 2 crops and uses, per the EPA label.
- soybean
- peanut
Need the rate or timing for one of these? Filter every label by your crop, free.
Weeds on the Classic label
The Classic label names 57 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 control38- bittercress, small-flowered
- buttercup, smallflower
- butterweed
- cocklebur, common
- dandelion
- deadnettle, purple
- garlic, wild
- henbit
- jimsonweed
- lambsquarters
- marestail, non-ALS-resistant
- morning glory, annual
- mustard
- mustard, tansy
- mustard, wild
- nutsedge, yellow
- pennycress, field
- pepperweed
- pigweed
- pigweed, redroot
- poinsettia, wild
- purselane
- ragweed, common
- ragweed, giant
- rocket, yellow
- sesbania, hemp
- shepherd's-purse
- sicklepod
- sida, prickly
- smartweed
- smartweed, annual
- smartweed, ladysthumb
- smartweed, pennsylvania
- speedwell, field
- starbur, bristly
- sunflower
- velvetleaf
- wallflower, bushy
Partial control
partial5- grasses, annual
- morning glory, annual
- nutsedge, yellow
- ragweed, giant
- sida, prickly
Suppression
suppression7- burcucumber
- chickweed, common
- nutsedge, purple
- pigweed, smooth
- spiderwort, tropical
- starbur, bristly
- thistle, canada
Controls with a tank-mix partner
needs partner17- chickweed, common
- grass, annual
- barnyardgrass, common
- corn, volunteer
- crabgrass
- foxtail
- nightshade, eastern black
- panicum, fall
- panicum, texas
- pigweed, rough
- signalgrass, broadleaf
- spiderwort, tropical
- buffalobur
- milkweed, common
- lambsquarters
- ragweed, common
- ragweed, giant
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
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 and your soil texture.
Get the rate for your field: build a program and FieldMarshal cites the exact per-acre rate for your crop to the label line.
Plant-back and rotation
Your interval depends on your application rate, the rotational crop, and your state, region, and rainfall — some intervals differ in AL, AR, DE, FL, GA, IA, IL, IN, KS, KY, LA, MD, MI, MN, MO, MS, NC, ND, NE, NJ, NY, OH, OK, PA, SC, SD, TN, TX, VA, WI, and WV.
Get the interval for your rotation: build a program and FieldMarshal cites the exact plant-back for your rotational crop to the label line.
Classic FAQ
What weeds does Classic control?
The Classic label names 57 weeds, including small-flowered bittercress, smallflower buttercup, butterweed, common cocklebur, dandelion, and purple deadnettle. 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.
What's the plant-back interval after Classic?
It depends on your rotational crop, application rate, and region, so the label gives a table, not one number. Build a program and FieldMarshal cites the exact interval for your rotation to the label line, so you can verify it.
Build a program →Can I tank-mix Classic?
It depends on your target weeds, crop stage, and which partners the label approves. Build a program and FieldMarshal checks the label for approved partners and cites the condition on each, so you can verify it.
Build a program →Plan in minutes, not evenings.
Start with Classic and let FieldMarshal build a defensible herbicide program for your field, every product, rate, and plant-back cross-referenced and cited.
Free account and label filter. Building a program is paid, metered by use, so you pay only for what you build.
Sources
Last updated 2026-07-10.