Herbicide label
Prowl H2O Herbicide Label
Prowl H2O (EPA 241-418) is a Group 3 pendimethalin herbicide labeled for 25 crops. The label lists 69 controlled weeds, plus partial-control, suppression, and partner-control categories.
“Pendimethalin, the active ingredient in Prowl H2O, is a Group 3 (WSSA)/Group K1 (HRAC) herbicide belonging to the dinitroaniline chemistry class. Prowl H2O is a meristematic inhibitor that interferes with meristematic plant cell division or mitosis inhibiting germinating seedling growth.”
Prowl H2O label facts
- Product Prowl H2O
- EPA Reg. No. 241-418
- Registrant BASF Agricultural Solutions US LLC
- Active ingredient pendimethalin
- MOA group 3
Crops on the Prowl H2O label
Prowl H2O is labeled for these 25 crops and uses, per the EPA label.
Weeds on the Prowl H2O label
The Prowl H2O label names 76 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 control69- amaranth, palmer
- barnyardgrass, common
- bittercress
- bluegrass, annual
- brome, downy
- brome, japanese
- bugloss, small
- canarygrass
- carpetweed
- cheat
- chess, hairy
- chickweed, common
- crabgrass
- crowfootgrass
- cupgrass
- cupgrass, woolly
- dodder
- fescue, volunteer
- fiddleneck
- filaree, redstem
- fingergrass, swollen
- foxtail, giant
- foxtail, green
- foxtail, yellow
- goatgrass, jointed
- goosegrass
- groundsel, common
- henbit
- johnsongrass, seedling
- junglerice
- knotweed, prostrate
- kochia
- lady's thumb
- lambsquarters, common
- lambsquarters, slimleaf
- prickly lettuce
- lovegrass species
- millet, wild-proso
- mustard, black
- mustard, wild
- stinging nettle
- nightshade, black
- wild oats
- panicum, browntop
- panicum, fall
- panicum, texas
- pigweed
- puncturevine
- purslane
- pusley, florida
- redmaids
- red rice
- rocket, london
- rockpurslane
- ryegrass, annual
- ryegrass, italian
- ryegrass, volunteer
- sandbur, field
- shattercane
- shepherd's-purse
- sida, prickly
- signalgrass
- smartweed, pennsylvania
- sprangletop, mexican
- sprangletop, red
- spurge, annual
- velvetleaf
- waterhemp, common
- witchgrass
Partial control
partial3- nightshade, hairy
- watergrass, early
- watergrass, late
Suppression
suppression4- morningglory
- ammannia, purple
- thistle, russian
- umbrella sedge, smallflower
Prowl H2O 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.
Prowl H2O FAQ
What weeds does Prowl H2O control?
The Prowl H2O label names 76 weeds, including palmer amaranth, common barnyardgrass, bittercress, annual bluegrass, downy brome, and japanese brome. Control varies by crop, rate, and timing.
What crops is Prowl H2O labeled for?
Prowl H2O is labeled for 25 crops and uses, including field corn, soybeans, wheat, cotton, and sunflower.
What is the active ingredient in Prowl H2O? Is it a generic?
Prowl H2O'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.