Herbicide label
Harbinger Herbicide Label
Harbinger (EPA 241-337-34704) is a Group 3 pendimethalin herbicide labeled for 1 crops. The label lists 16 controlled weeds, plus partial-control, suppression, and partner-control categories.
“This product is a selective herbicide for controlling most annual grasses and certain broadleaf weeds as they germinate.”
Harbinger label facts
- Product Harbinger
- EPA Reg. No. 241-337-34704
- Distributor Loveland Products, Inc.
- Active ingredient pendimethalin
- MOA group 3
Crops on the Harbinger label
Harbinger is labeled for these 1 crops and uses, per the EPA label.
Weeds on the Harbinger label
The Harbinger label names 26 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 control16- bugloss, small
- carpetweed
- henbit
- kochia
- lady's thumb
- lambsquarters, common
- lambsquarters, slimleaf
- mustard, black
- pigweed
- purslane
- pusley, florida
- sprangletop
- spurge, annual
- waterhemp, common
- witchgrass
- junglerice
Suppression
suppression10- amaranth, palmer
- chickweed, common
- cupgrass, woolly
- millet, wild-proso
- rocket, london
- shattercane
- shepherd's-purse
- signalgrass
- smartweed, pennsylvania
- velvetleaf
Harbinger 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.
Harbinger FAQ
What weeds does Harbinger control?
The Harbinger label names 26 weeds, including small bugloss, carpetweed, henbit, kochia, lady's thumb, and common lambsquarters. Control varies by crop, rate, and timing.
What crops is Harbinger labeled for?
Harbinger is labeled for 1 crops and uses, including rice.
What is the active ingredient in Harbinger? Is it a generic?
Harbinger's active ingredient is pendimethalin (MOA Group 3). 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.