Herbicide label
Boundary 6.5EC Herbicide Label
Boundary 6.5EC (EPA 100-1162) is a Group 5 and 15 metolachlor and metribuzin herbicide labeled for 3 crops. The label lists 57 controlled weeds, plus partial-control, suppression, and partner-control categories.
Boundary 6.5EC label facts
- Product Boundary 6.5EC
- EPA Reg. No. 100-1162
- Registrant Syngenta Crop Protection, LLC
- Active ingredient metolachlor and metribuzin
- MOA group 5 and 15
Crops on the Boundary 6.5EC label
Boundary 6.5EC is labeled for these 3 crops and uses, per the EPA label.
Weeds on the Boundary 6.5EC label
The Boundary 6.5EC label names 71 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 control57- amaranth, palmer
- amaranth, powell
- anoda, spurred
- barnyardgrass, common
- bluegrass, annual
- carpetweed
- chickweed, common
- copperleaf, hophornbeam
- crabgrass, large
- crabgrass, smooth
- crowfootgrass
- cupgrass, prairie
- cupgrass, southwestern
- foxtail, bristly
- foxtail, giant
- foxtail, green
- foxtail, millet
- foxtail, yellow
- galinsoga, hairy
- galinsoga, smallflower
- goosegrass
- henbit
- jimsonweed
- junglerice
- knotweed
- kochia
- ladysthumb
- lambsquarters, common
- prickly lettuce
- mallow, venice
- mustard
- nightshade, eastern black
- nutsedge, yellow
- panicum, fall
- pennycress, field
- pepperweed, virginia
- pigweed, prostrate
- pigweed, redroot
- pigweed, smooth
- pigweed, tumble
- purslane, common
- pusley, florida
- redweed
- red rice
- ryegrass, italian
- sesbania, hemp
- shepherd's-purse
- sicklepod
- sida, prickly
- signalgrass, broadleaf
- smartweed, pennsylvania
- dayflower, benghal
- spurge, spotted
- starbur, bristly
- thistle, russian
- waterhemp, common
- witchgrass
Partial control
partial14- beggarweed, florida
- cocklebur, common
- cupgrass, woolly
- eclipta
- johnsongrass
- millet, wild-proso
- nightshade, hairy
- panicum, texas
- ragweed, common
- sandbur, field
- sandbur, southern
- shattercane
- sorghum, volunteer
- velvetleaf
Boundary 6.5EC 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.
Boundary 6.5EC FAQ
What weeds does Boundary 6.5EC control?
The Boundary 6.5EC label names 71 weeds, including palmer amaranth, powell amaranth, spurred anoda, common barnyardgrass, annual bluegrass, and carpetweed. Control varies by crop, rate, and timing.
What crops is Boundary 6.5EC labeled for?
Boundary 6.5EC is labeled for 3 crops and uses, including soybeans, potato, and sugarcane.
What is the active ingredient in Boundary 6.5EC? Is it a generic?
Boundary 6.5EC's active ingredient is metolachlor and metribuzin (MOA Group 5 and 15). 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.