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Douglas County Noxious Weed Control provides this information as a courtesy (disclaimer) to those who are interested in controlling noxious weeds. We recommend a combination of two methods below (an integrated approach) to effectively control an infestation. If you prefer to have a Commercial Company take care of your Control needs, you can visit our Contractor's Page or use any Contractor found in the Yellow Pages. Equipment may also be available at a local rental store.

Remember, no matter what method(s) is used, ALL AREAS of the property must be maintained. These areas include around fences, poles, mounds, holes, hillsides (no matter how steep), and any other areas that may require specialized control.

Chemical Application
Note:
The below information is derived from the Nebraska Cooperative Extension EC 06-130-D (HERBICIDE USE IN NEBRASKA). Please consult the individual pesticide label for proper application rates.

Always read and follow label directions and wear the proper Personal Protective Equipment

Herbicide* 

Application Timing 

Remarks 

Rodeo
Roundup
Ultra
Apply to plants with active growth in bloom stage or later Use Rodeo in or near water sources. Add appropriate surfactant to Rodeo

* A property owner is not limited to these Herbicides only. Other Herbicides may be available, please consult the individual herbicide label for proper application directions. Herbicides can be found at coops, area nurseries, retail stores, farm stores, and other landscape centers. For more information on Herbicides and their uses please check with the Douglas County Extension Service.

Mechanical Control

Method 

Timing 

Remarks 

Digging
Hand Pulling
Mowing (not recommended)

Any plant stage before setting seeds. Remove as much of the Root system and other plant parts as possible. Plant will regenerate by root parts.

Biological Controls
The use of natural enemies for the control of purple loosestrife is currently being studied in Nebraska. Douglas County has made one release of insects and another release in 2002. These agents work slowly and results may not be seen for several years. They should be used as a tool and should be part of an integrated program and not relied on to completely control any noxious weed. They shall be as effective as the use of herbicides and shall be approved by the Douglas County Weed Control before being used.

Control Method Recommendation
Note: Improving the conditions and competition of desirable grasses and vegetation is the best defense against noxious weeds. Avoiding waste areas, overgrazing, disturbed ground and proper care of existing vegetation, will aid in keeping noxious weeds away.
KEY: Be PERSISTANT! A Perennial requires multiple years of control.

Small Infestations (less than 1 acre):

Spring 

Summer 

Fall 

Chemical/Digging actively growing Chemical/Digging Flower Stage Chemical/Digging when actively growing Sept - Oct


Large Infestations (greater than 1 acre) - please contact the Douglas County Weed Control for recommendation.



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