Chateau WDG

Horticulture Herbicide

Chateau® WDG herbicide, a PPO inhibitor, works as a barrier on the soil surface to provide season-long, residual control of tough broadleaf and grass weeds in horticulture crops.

Technical Information

Herbicide group:  Group 14
Active ingredient:  flumioxazin 51.1%
Packaging:  4 x 1.13 kg case
Rainfast:  Requires ½ inch of rain or irrigation for activation
PCP #:  29231

Registered Crops

  • Asparagus
  • Blueberry (highbush and lowbush)
  • Celery
  • Dry bulb onion
  • Established mint (peppermint and spearmint)
  • Field pepper
  • Garlic
  • Grape
  • Maintain bare ground and non-crop areas
  • Hop
  • Nut trees
  • Pome fruit
  • Potato (Western Canada only)
  • Stone fruit
  • Strawberry
  • Sweet potato
  • And to maintain bare ground in non-crop areas


  • Long-lasting residual, pre-emergent broadleaf weed control with bonus grass suppression
  • Chateau stays where it’s sprayed and will not leach or volatilize
  • Group 14 herbicide (PPO inhibitor) works differently than many other commonly used herbicides, helping to fight resistance
  • The herbicide barrier cannot be disturbed after activation
  • Offers flexible application timing

General Usage Information

  • Moisture is necessary to activate Chateau in soil for weed control (½ inch of rain or irrigation)
  • This product will not control emerged weeds
  • Significant crop injury may occur from applications made to poorly drained soils and/or applications made under cool, wet conditions
  • Do not apply to farm alleys or roads where traffic may result in treated dust settling onto crops or other desirable vegetation
  • Application to non-dormant crops or when soils are flooded after application may result in non-acceptable crop injury, including yield loss
  • Use appropriate water volumes to ensure good coverage
  • Apply prior to weed emergence
  • Undesirable crop injury may occur if Chateau comes in contact with fruit or foliage
  • DO NOT tank-mix with Dual II

Improve Your Apple Crop

Protect Your Blueberry Crop