Herbicide label

PENDALIN H2O

PENDALIN H2O (EPA 83100-81) is a Group 3 pendimethalin herbicide labeled for 27 crops. The label lists 69 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

“Weeds Controlled** (see crop sections for additional weeds controlled) | | | Weeds Controlled with PENDALIN™ H2O Applied up to 4pts/A | | |----------------------------------------------|----------------------------------------------------------------------------|---------------------------------------------------------------|--------------------------| | | | Grass Weeds | | | Annual ryegrass* | Downy brome* | Italian ryegrass* | Sandbur, field | | Barnyardgrass | Foxtail, giant | Japanese brome*,1 | Shattercane* | | Canarygrass*,2 | Foxtail, green | Johnsongrass (seedling) | Signalgrass* | | Cheat*,2 | Foxtail, yellow | Jointed goatgrass*,1 | Wild proso millet* | | Crabgrass | Goosegrass | Oat, wild* | Witchgrass | | Crowfootgrass | Hairy chess*,1 | Panicum, fall | Woolly cupgrass* | | Cupgrass | Itchgrass* | Panicum, Texas | | | | | Broadleaf Weeds | | | Amaranth, Palmer | Henbit | Mustard, black2 | Shepherdspurse* | | Bittercress[2] | Kochia | Pigweed species | Smartweed, Pennsylvania* | | Black nightshade | Lady's thumb | Prickly sida | Spurge, annual | | Bugloss, small1 | Lambsquarters, common | Prostrate knotweed[2] | Velvetleaf* | | Carpetweed | Lambsquarters, slimleaf2 | Purslane | Waterhemp species | | Chickweed, common* | London rocket* | Pusley, Florida | Wild mustard | | Common groundsel | | Redstem filaree | | | | * Suppression, but controlled when PENDALIN™ H2O use rate exceeds 4 pts/A. | | | | 1 Not suppressed or controlled in California | | | | | 2 Not controlled in California | | | | | | | Weeds Controlled with PENDALIN™ H2O Applied at 4pts/A or More | | | | | Grass Weeds | | | Annual bluegrass | Grass, Guinea2 | Lovegrass | Sprangletop, red | | | | | | Junglerice Morningglory\*\* Prickly lettuce Dodder† Fiddleneck Browntop panicum . **Broadleaf Weeds** Sprangletop, Mexican Prostrate knotweed Puncturevine Swollen fingergrass Redmaids rockpurslane Pendimethalin, the active ingredient in **PENDALIN™ H2O** is a **Group 3 (WSSA)/Group K1 (HRAC)** herbicide belonging to the dinitroaniline chemistry class. **PENDALIN™ H2O** is a meristematic inhibitor that interferes with meristematic plant cell division or mitosis inhibiting germinating seedling growth. . **PENDALIN™ H2O** is a **Group 3** herbicide.”

— PENDALIN H2O EPA label, Reg. No. 83100-81

PENDALIN H2O label facts

Crops on the PENDALIN H2O label

PENDALIN H2O is labeled for these 27 crops and uses, per the EPA label.

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Weeds on the PENDALIN H2O label

The PENDALIN 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
  • lovegrass species
  • millet, wild-proso
  • mustard, black
  • mustard, wild
  • stinging nettle
  • nightshade, black
  • wild oats
  • panicum, browntop
  • panicum, fall
  • panicum, texas
  • pigweed
  • prickly lettuce
  • 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

partial2
  • watergrass, early
  • watergrass, late

Suppression

suppression5
  • morningglory
  • nightshade, hairy
  • ammannia, purple
  • thistle, russian
  • umbrella sedge, smallflower

Weed indexes featuring this label

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PENDALIN 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 and your soil texture.

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Plant-back and rotation

Your interval depends on your application rate, the rotational crop, and your state, region, and rainfall — some intervals differ in AL, AR, AZ, CA, CO, CT, DE, FL, GA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, and WY.

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PENDALIN H2O FAQ

What weeds does PENDALIN H2O control?

The PENDALIN 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 PENDALIN H2O labeled for?

PENDALIN H2O is labeled for 27 crops and uses, including field corn, soybeans, wheat, cotton, and sunflower.

What is the active ingredient in PENDALIN H2O? Is it a generic?

PENDALIN 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.

What's the plant-back interval after PENDALIN H2O?

It depends on your rotational crop, application rate, and region, so the label gives a table, not one number. Build a program and FieldMarshal gives you the exact interval for your rotation from the label line, so you can verify it.

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Can I tank-mix PENDALIN H2O?

It depends on your target weeds, crop stage, and which partners the label approves. Build a program and FieldMarshal checks the label for approved partners and gives the condition on each, so you can verify it.

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Sources

Last updated 2026-07-14.