Herbicide label

Willowood Paraquat 3 SL

Willowood Paraquat 3 SL (EPA 87290-35) is a Group 22 paraquat herbicide labeled for 29 crops. The label lists 35 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

“Willowood Paraquat 3 SL is a contact herbicide for control or suppression of a broad spectrum of emerged weeds including most small annual broadleaf and grass weeds.”

— Willowood Paraquat 3 SL EPA label, Reg. No. 87290-35

Willowood Paraquat 3 SL label facts

Crops on the Willowood Paraquat 3 SL label

Willowood Paraquat 3 SL is labeled for these 29 crops and uses, per the EPA label.

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Weeds on the Willowood Paraquat 3 SL label

The Willowood Paraquat 3 SL label names 53 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 control35
  • barley
  • barnyardgrass, common
  • bluegrass, annual
  • brome, downy
  • brome, rescue
  • chickweed
  • crabgrass
  • dogfennel
  • fiddleneck
  • foxtail
  • foxtail, giant
  • goosegrass
  • groundcherry, cutleaf
  • groundsel, common
  • henbit
  • johnsongrass, seedling
  • maids, red
  • millet, texas
  • wild oats
  • panicum, fall
  • pigweed
  • purslane
  • ragweed, common
  • red rice
  • rocket, london
  • ryegrass
  • shepherd's-purse
  • sicklepod
  • signalgrass, broadleaf
  • small grain, volunteer
  • sowthistle
  • spikeweed
  • tansymustard
  • volunteer wheat
  • witchweed

Partial control

partial14
  • cocklebur, common
  • knotweed
  • kochia
  • lambsquarters
  • prickly lettuce
  • mallow
  • horseweed
  • morningglory
  • ragweed, giant
  • sedges
  • sida, prickly
  • smartweed, pennsylvania
  • starbur, bristly
  • velvetleaf

Suppression

suppression4
  • bindweed, hedge
  • dandelion
  • ryegrass, italian
  • thistle, canada

Weed indexes featuring this label

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Willowood Paraquat 3 SL 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.

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Willowood Paraquat 3 SL FAQ

What weeds does Willowood Paraquat 3 SL control?

The Willowood Paraquat 3 SL label names 53 weeds, including barley, common barnyardgrass, annual bluegrass, downy brome, rescue brome, and chickweed. Control varies by crop, rate, and timing.

What crops is Willowood Paraquat 3 SL labeled for?

Willowood Paraquat 3 SL is labeled for 29 crops and uses, including field corn, soybeans, wheat, cotton, and sunflower.

What is the active ingredient in Willowood Paraquat 3 SL? Is it a generic?

Willowood Paraquat 3 SL's active ingredient is paraquat (MOA Group 22). Other products list the same active ingredient; rates, formulations, and labeled crops differ — verify each on its own label.

Can I tank-mix Willowood Paraquat 3 SL?

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.