Herbicide label

Shadow Herbicide Label

Shadow (EPA 66330-353) is a Group 1 clethodim herbicide labeled for 24 crops. The label lists 53 controlled weeds, plus partial-control, suppression, and partner-control categories.

“This product is a selective postemergence herbicide for control of annual and perennial grasses.”

— Shadow EPA label, Reg. No. 66330-353

Shadow label facts

Crops on the Shadow label

Shadow is labeled for these 24 crops and uses, per the EPA label.

Weeds on the Shadow label

The Shadow label names 57 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 control53
  • barnyardgrass, common
  • bentgrass
  • bermudagrass
  • bluegrass, annual
  • bluegrass, kentucky
  • bluegrass, roughstalk
  • brome, california
  • brome, cheat
  • brome, downy
  • brome, ripgut
  • canarygrass
  • corn, volunteer
  • crabgrass, hairy
  • crabgrass, large
  • crabgrass, smooth
  • crabgrass, southern
  • crowfootgrass
  • cupgrass, southwestern
  • cupgrass, woolly
  • fescue, tall
  • foxtail barley
  • foxtail, giant
  • foxtail, green
  • foxtail, yellow
  • goosegrass
  • rhizome johnsongrass
  • johnsongrass, seedling
  • junglerice
  • lovegrass, stinkgrass
  • foxtail, millet
  • millet, wild-proso
  • muhly, wirestem
  • oats
  • orchardgrass
  • panicum, fall
  • panicum, texas
  • quackgrass
  • rabbitsfootgrass
  • red rice
  • rye, volunteer
  • ryegrass, hardy
  • ryegrass, italian
  • sandbur, field
  • shattercane
  • signalgrass, broadleaf
  • sorghum, volunteer grain
  • sprangletop, amazon
  • sprangletop, bearded
  • sprangletop, mexican
  • sprangletop, red
  • volunteer wheat
  • wild oats
  • witchgrass

Suppression

suppression4
  • corn, volunteer sethoxydim-resistant
  • fescue, tall seed-heads
  • grass, annual
  • grass, perennial

Shadow 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.

Shadow FAQ

What weeds does Shadow control?

The Shadow label names 57 weeds, including common barnyardgrass, bentgrass, bermudagrass, annual bluegrass, kentucky bluegrass, and roughstalk bluegrass. Control varies by crop, rate, and timing.

What crops is Shadow labeled for?

Shadow is labeled for 24 crops and uses, including soybeans, cotton, sunflower, potato, and peanut.

What is the active ingredient in Shadow? Is it a generic?

Shadow's active ingredient is clethodim (MOA Group 1). 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.