Herbicide label
Chateau SW Herbicide Label
Chateau SW (EPA 59639-99) is a Group 14 flumioxazin herbicide labeled for 17 crops. The label lists 85 controlled weeds, plus partial-control, suppression, and partner-control categories.
Chateau SW label facts
- Product Chateau SW
- EPA Reg. No. 59639-99
- Registrant Valent U. S. A. LLC
- Active ingredient flumioxazin
- MOA group 14
Crops on the Chateau SW label
Chateau SW is labeled for these 17 crops and uses, per the EPA label.
Weeds on the Chateau SW label
The Chateau SW label names 94 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 control85- amaranth, palmer
- anoda, spurred
- barnyardgrass, common
- beggarweed, florida
- bluegrass, annual
- copperleaf, hophornbeam
- crabgrass, large
- crabgrass, smooth
- croton, tropic
- crownbeard, golden
- filaree, redstem
- filaree, whitestem
- fleabane, hairy
- foxtail, bristly
- foxtail, giant
- foxtail, green
- foxtail, yellow
- goosegrass
- groundsel, common
- guineagrass
- indigo, hairy
- jimsonweed
- johnsongrass, seedling
- lovegrass, california
- morningglory, entireleaf
- morningglory, ivyleaf
- morningglory, scarlet
- morningglory, tall
- mustard, tumble
- panicum, fall
- panicum, texas
- poinsettia, wild
- ragweed, common
- redweed
- senna, coffee
- sesbania, hemp
- signalgrass, broadleaf
- smartweed, ladysthumb
- smartweed, pennsylvania
- sowthistle, annual
- starbur, bristly
- thistle, russian
- velvetleaf
- waterhemp, common
- amaranth, spiny
- carpetweed
- eclipta
- lambsquarters, common
- mallow, little
- mallow, venice
- morningglory, smallflower
- nightshade, black
- nightshade, eastern black
- nightshade, hairy
- pigweed, redroot
- pigweed, smooth
- pigweed, tumble
- puncturevine
- purslane, common
- pusley, florida
- radish, wild
- redmaids
- sida, prickly
- spurge, spotted
- volunteer canola
- brome, downy
- cockle, white
- deadnettle, purple
- flixweed
- carolina geranium
- groundsel, cressleaf
- kochia
- mallow, common
- mustard, tansy
- mustard, wild
- wormwood, biennial
- chamomile, false
- chickweed, common
- chickweed, mouseear
- dandelion
- eveningprimrose, cutleaf
- henbit
- horseweed
- prickly lettuce
- shepherd's-purse
Suppression
suppression2- buckwheat, wild
- ragweed, giant
Controls with a tank-mix partner
needs partner7- bindweed, field
- cocklebur, common
- flatsedge, rice
- morningglory, pitted
- plantain, broadleaf
- sicklepod
- smartweed, pale
Chateau SW 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.
Chateau SW FAQ
What weeds does Chateau SW control?
The Chateau SW label names 94 weeds, including palmer amaranth, spurred anoda, common barnyardgrass, florida beggarweed, annual bluegrass, and hophornbeam copperleaf. Control varies by crop, rate, and timing.
What crops is Chateau SW labeled for?
Chateau SW is labeled for 17 crops and uses, including field corn, wheat, cotton, sunflower, and barley.
What is the active ingredient in Chateau SW? Is it a generic?
Chateau SW's active ingredient is flumioxazin (MOA Group 14). 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.