Idaho Weed Awareness Campaign
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Hoary Cress                                     

WHITETOP (Hoary Cress) CONTROL

Dupont Logo Pasture/Rangeland/Non-crop –Escort® XP or Telar® XP, one ounce at bud (not bloom, just when you are seeing a few flowers opening up).

Turf – Corsair, about any stage, caution – will take out Rye grass and Fescue grasses so you must know what kind of grass the turf is

Roundup plus 2,4-D is somewhat effective in ornamentals.

Mechanical control is not recommended as this plant is a rhizomatous perennial and cultivation will encourage more growth.

There is no biocontrol for the plant, but research is under way to find one.

ERADICATING WHITETOP

PLEASE NOTE - The proper use and application of herbicides can be an effective way to control and eradicate noxious and invasive plants. Before using herbicides, always carefully follow the label and safety instructions on the label. While we recommend the use of herbicides as one of the effective tools for integrated pest management, the Idaho Weed Awareness Campaign assumes no liability for herbicide applications.

For more information, click on the link below to download the Idaho's Noxious Weeds 2009 Control Guidelines publication produced by the University of Idaho Extension.

U of I Idaho's Noxious Weeds 2009 Control Guidelines (183 KB PDF download)

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