Herbicide label
Voucher Herbicide Label
Voucher (EPA 5905-585) is a Group 4 fluroxypyr 1-methylheptyl ester and mcpa herbicide labeled for 9 crops. The label lists 45 controlled weeds, plus partial-control, suppression, and partner-control categories.
Voucher label facts
- Product Voucher
- EPA Reg. No. 5905-585
- Registrant Helena Agri-Enterprises, LLC, d/b/a Helena Chemical Comp
- Active ingredient fluroxypyr 1-methylheptyl ester and mcpa
- MOA group 4
Crops on the Voucher label
Voucher is labeled for these 9 crops and uses, per the EPA label.
Weeds on the Voucher label
The Voucher label names 87 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 control45- bedstraw, catchweed
- bittercress
- nettle, bull
- beakchervil, bur
- buttercup
- volunteer canola
- chickweed
- cinquefoil
- cocklebur, common
- coffeeweed
- copperleaf, virginia
- dandelion
- dock, curly
- volunteer flax
- flixweed
- carolina geranium
- dogbane, hemp
- horseweed
- jacob's ladder
- kochia
- lambsquarter, common
- mallow, venice
- marshelder
- morning glory, annual
- mousetail
- mustard (except blue)
- pennycress, field
- pigweed
- plantain
- prickly lettuce
- evening primrose
- puncturevine
- purslane, common
- ragweed, common
- ragweed, giant
- thistle, russian
- shepherd's-purse
- sicklepod
- sowthistle, annual
- sowthistle, spring
- speedwell
- sunflower
- sweetclover
- velvetleaf
- potato, volunteer
Suppression
suppression42- alfalfa
- beggarticks
- bindweed, field
- buckwheat, wild
- burcucumber
- burdock
- carpetweed
- carrot, wild
- catsear
- clover, red
- spurry, corn
- cowcockle
- croton
- daisy
- dragonhead mint
- fiddleneck
- galinsoga
- garlic, wild
- goatshead
- hempnettle
- henbit
- hoarycress
- ironweed
- jimsonweed
- knawel
- ladysthumb
- mallow, common
- nightshade, black
- onion, wild
- peppergrass
- pepperweeds, annual
- poison hemlock
- radish, wild
- filaree, redstem
- falseflax, smallseed
- smartweed
- tansymustard
- thistle, bull
- thistle, canada
- thistle, musk
- vetch, hairy
- rocket, yellow
Voucher 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.
Voucher FAQ
What weeds does Voucher control?
The Voucher label names 87 weeds, including catchweed bedstraw, bittercress, bull nettle, bur beakchervil, buttercup, and volunteer canola. Control varies by crop, rate, and timing.
What crops is Voucher labeled for?
Voucher is labeled for 9 crops and uses, including wheat, barley, sorghum, durum wheat, and oats.
What is the active ingredient in Voucher? Is it a generic?
Voucher's active ingredient is fluroxypyr 1-methylheptyl ester and mcpa (MOA Group 4). Other products list the same active ingredient; rates, formulations, and labeled crops differ — verify each on its own label.
Sources
Last updated 2026-09-17.