Herbicide label
Sinister Herbicide Label
Sinister (EPA 5905-593) is a Group 14 fomesafen herbicide labeled for 4 crops. The label lists 54 controlled weeds, plus partial-control, suppression, and partner-control categories.
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.
Weeds on the Sinister label
The Sinister label names 69 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 control54- amaranth, palmer
- amaranth, spiny
- anoda, spurred
- balloonvine
- carpetweed
- citron (wild watermelon)
- cocklebur, common
- copperleaf, hophornbeam
- copperleaf, virginia
- crotalaria, showy
- croton, tropic
- cucumber, volunteer
- eclipta
- galinsoga spp.
- groundcherry, cutleaf
- hemp
- horsenettle
- jimsonweed
- ladysthumb
- lambsquarters, common
- 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
- redweed
- sesbania, hemp
- sicklepod
- sida, prickly
- smartweed, pennsylvania
- smellmelon
- spurge, prostrate
- spurge, spotted
- starbur, bristly
- sunflower, annual
- velvetleaf
- waterhemp, common
- witchweed
- rocket, yellow
Partial control
partial15- barnyardgrass, common
- bindweed, field
- bindweed, hedge
- crabgrass
- foxtail
- goosegrass
- johnsongrass, seedling
- milkweed, climbing
- milkweed, honeyvine
- nightshade, hairy
- nutsedge, yellow
- panicum, fall
- panicum, texas
- signalgrass, broadleaf
- trumpetcreeper
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.
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.
Sinister FAQ
What weeds does Sinister control?
The Sinister label names 69 weeds, including palmer amaranth, spiny amaranth, spurred anoda, balloonvine, carpetweed, and citron (wild watermelon). 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.
Sources
Last updated 2026-09-30.