Herbicide label
Opti-Amine Herbicide Label
Opti-Amine (EPA 5905-501) is a Group 4 2,4-d herbicide labeled for 13 crops. The label lists 147 controlled weeds, plus partial-control, suppression, and partner-control categories.
Opti-Amine label facts
- Product Opti-Amine
- EPA Reg. No. 5905-501
- Registrant Helena Agri-Enterprises, LLC, d/b/a Helena Chemical Comp
- Active ingredient 2,4-d
- MOA group 4
Crops on the Opti-Amine label
Opti-Amine is labeled for these 13 crops and uses, per the EPA label.
Weeds on the Opti-Amine label
The Opti-Amine label names 150 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 control147- alligatorweed
- arrowhead
- artichoke
- jerusalem artichoke
- aster
- beggarticks
- biden
- bindweed, hedge
- bittercress, small-flowered
- bittersweet
- sneezeweed, bitter
- blackeyed susan
- box elder
- broomweed, annual
- buckhorn
- bullnettle
- bulrush
- burdock
- buttercup
- buttercup, smallflowered
- carpetweed
- carrot, wild
- catnip
- cedar, salt
- chickweed
- chicory
- cinquefoil
- cinquefoil, common
- cockle
- cocklebur, common
- coffeebean
- coffeeweed
- creeping jenny
- hoary cress
- croton
- dandelion
- devil's claw
- dock
- dogbane
- eveningprimrose, cutleaf
- fieldcress, austrian
- fleabane, annual
- flixweed
- frenchweed
- galinsoga
- garlic, wild
- carolina geranium
- goatsbeard
- goldenrod
- goosefoot
- ground ivy
- gumweed
- hawkweed, orange
- heal-all
- poison hemlock
- hemp
- henbit
- honeysuckle
- horseweed
- horsetail
- indigo
- indigo, curly
- poison ivy
- jimsonweed
- jewelweed
- knotweed
- lambsquarters
- lettuce, blue
- prickly lettuce
- lettuce, wild
- locoweed
- lupine
- mallow
- mallow, indian
- marijuana
- marshelder
- mexican weed
- morningglory
- mousetail
- mustard
- mustard, wild
- needles, spanish
- nettle
- stinging nettle
- nutgrass
- onion, wild
- parrot feather
- parsnip
- parsnip, wild
- pennycress, field
- pennywort
- peppergrass
- pepperweed
- pigweed
- plantain
- water plantain
- pokeweed, common
- poorjoe
- povertyweed
- primrose
- water primrose
- puncturevine
- purslane
- purslane, common
- pusley, florida
- radish, common
- radish, wild
- ragweed, giant
- ragweed, bur
- rape, wild
- rocket, yellow
- rose, southern wild
- rush
- salsify
- shepherd's-purse
- shield, water
- sicklepod
- smartweed
- speedwell
- st. johnswort
- stinkweed
- sunflower
- sweet potato, wild
- sweetclover
- tanweed
- tarweed
- thistle
- thistle, blessed
- thistle, bull
- thistle, canada
- thistle, musk
- thistle, russian
- sowthistle
- toadflax
- tumbleweed
- velvetleaf
- venicemallow
- vervain
- vetch
- virginia creeper
- water milfoil
- wild strawberry
- wintercress, bitter
- witchweed
- wormseed
- wormwood
- plantain, water common
Partial control
partial3- alfalfa
- clover, red
- copperleaf, virginia
Opti-Amine 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.
Opti-Amine FAQ
What weeds does Opti-Amine control?
The Opti-Amine label names 150 weeds, including alligatorweed, arrowhead, artichoke, jerusalem artichoke, aster, and beggarticks. Control varies by crop, rate, and timing.
What crops is Opti-Amine labeled for?
Opti-Amine is labeled for 13 crops and uses, including field corn, soybeans, wheat, potato, and barley.
What is the active ingredient in Opti-Amine? Is it a generic?
Opti-Amine's active ingredient is 2,4-d (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 2026-09-30.