Herbicide label
Sinister
Sinister (EPA 5905-593) is a Group 14 fomesafen herbicide labeled for 4 crops. The label lists 52 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.
Sinister label facts
- Product Sinister
- EPA Reg. No. 5905-593
- Registrant Helena Agri-Enterprises, LLC, d/b/a Helena Chemical Comp
- Active ingredient fomesafen
- MOA group 14
Crops on the Sinister label
Sinister is labeled for these 4 crops and uses, per the EPA label.
- soybean
- cotton
- potato
- dry edible bean
Need the rate or timing for one of these? Filter every label by your crop, free.
Weeds on the Sinister label
The Sinister label names 72 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 control52- amaranth, palmer
- amaranth, spiny
- anoda, spurred
- balloonvine
- carpetweed
- citron
- cocklebur, common
- copperleaf, hophornbeam
- copperleaf, virginia
- crotalaria, showy
- croton, tropic
- cucumber, volunteer
- eclipta
- galinsoga spp.
- groundcherry, cutleaf
- hemp
- horsenettle
- jimsonweed
- ladysthumb
- lambsquarters, common
- mallow, venice
- mexicanweed
- morningglory, cypressvine
- morningglory, entireleaf
- morningglory, ivyleaf
- morningglory, palmleaf
- morningglory, pitted
- morningglory, purple moonflower
- morningglory, red
- morningglory, smallflower
- morningglory, tall
- mustard, wild
- nightshade, black
- nightshade, eastern black
- pigweed, redroot
- pigweed, smooth
- poinsettia, wild
- purslane, common
- pusley, florida
- ragweed, common
- ragweed, giant
- rocket, yellow
- sesbania, hemp
- sida, prickly
- smartweed, pennsylvania
- smellmelon
- spurge, prostrate
- starbur, bristly
- sunflower, annual
- velvetleaf
- waterhemp, common
- witchweed
Partial control
partial31- anoda, spurred
- barnyardgrass, common
- bindweed, field
- bindweed, hedge
- cocklebur, common
- crabgrass
- foxtail, giant
- foxtail, green
- foxtail, yellow
- goosegrass
- johnsongrass, seedling
- lambsquarters, common
- milkweed, climbing
- milkweed, honeyvine
- morningglory, entireleaf
- morningglory, ivyleaf
- morningglory, pitted
- morningglory, red
- morningglory, tall
- nightshade, hairy
- nutsedge, yellow
- panicum, fall
- panicum, texas
- ragweed, giant
- redweed
- sicklepod
- sida, prickly
- signalgrass, broadleaf
- spurge, spotted
- trumpetcreeper
- waterhemp, common
Suppression
suppression1- nutsedge, yellow
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
Sinister 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, CT, DE, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, NC, ND, NE, NH, NJ, NY, OH, OK, PA, RI, SC, SD, TN, TX, VA, VT, 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.
Sinister FAQ
What weeds does Sinister control?
The Sinister label names 72 weeds, including palmer amaranth, spiny amaranth, spurred anoda, balloonvine, carpetweed, and citron. Control varies by crop, rate, and timing.
What crops is Sinister labeled for?
Sinister is labeled for 4 crops and uses, including soybeans, cotton, potato, and dry edible bean.
What is the active ingredient in Sinister? Is it a generic?
Sinister's active ingredient is fomesafen (MOA Group 14). 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 Sinister?
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 Sinister?
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 Sinister 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.