Herbicide label
Vios FX Herbicide Label
Vios FX (EPA 264-1221) is a Group 2 and 4 fluroxypyr 1-methylheptyl ester and thiencarbazone-methyl herbicide labeled for 4 crops. The label lists 27 controlled weeds, plus partial-control, suppression, and partner-control categories.
Vios FX label facts
- Product Vios FX
- EPA Reg. No. 264-1221
- Registrant Bayer CropScience, LLC
- Active ingredient fluroxypyr 1-methylheptyl ester and thiencarbazone-methyl
- MOA group 2 and 4
Crops on the Vios FX label
Vios FX is labeled for these 4 crops and uses, per the EPA label.
Weeds on the Vios FX label
The Vios FX label names 43 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 control27- barnyardgrass, common
- bedstraw, catchweed
- volunteer canola
- chickweed, common
- cocklebur, common
- coffeeweed
- dogbane, hemp
- volunteer flax
- foxtail, green
- foxtail, yellow
- grape species
- hempnettle
- kochia
- prickly lettuce
- mallow, venice
- morningglory
- mustard, wild
- wild oats
- pennycress, field
- pigweed, redroot
- puncturevine
- purslane, common
- ragweed, common
- ragweed, giant
- shepherd's-purse
- sunflower
- velvetleaf
Partial control
partial16- bindweed, field
- brome, japanese
- buckwheat, wild
- darnel, persian
- devilsclaw
- horsetail, field
- horseweed
- knotweed
- lambsquarters, common
- mallow, common
- marshelder
- nightshade, black
- potato, volunteer
- smartweed, pennsylvania
- stork's-bill
- thistle, russian
Vios FX 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.
Vios FX FAQ
What weeds does Vios FX control?
The Vios FX label names 43 weeds, including common barnyardgrass, catchweed bedstraw, volunteer canola, common chickweed, common cocklebur, and coffeeweed. Control varies by crop, rate, and timing.
What crops is Vios FX labeled for?
Vios FX is labeled for 4 crops and uses, including wheat, winter wheat, spring wheat, and durum wheat.
What is the active ingredient in Vios FX? Is it a generic?
Vios FX's active ingredient is fluroxypyr 1-methylheptyl ester and thiencarbazone-methyl (MOA Group 2 and 4). 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.