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Weed Treatment Methods

Your Property- Weed Inventory Assessment

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Spotted Knapweed


Orange Hawkweed

Dalmatian Toadflax

Leafy Spurge


Sulfur cinquefoil

Common Tansy

Additional State Listed Noxious Weeds

Different Tools Used to Control Noxious Weed Infestations:

Herbicide Control: 

Using low amounts of herbicide mixed with water and applied with either a backpack sprayer or an ATV is an effective and fast way to control weeds, and shows benefits and results within the same year. 

Many herbicides are very specific or ‘selective’, this means their chemistry is designed to only affect target weeds with little to no effect on desired vegetation.  Other herbicides, such as glyphosate (round up) are considered a general, non-selective herbicide and will kill or wilt all plants that come in contact.



Mechanical Control: 

This method uses mowing, cultivation, shoveling and/or hand pulling to remove certain plants and reduce the seed bank from an area.  This method works well on smaller project areas and for annual, biennial and tap-rooted plants. In other cases, mechanical control is discouraged on plants such as leafy spurge, toadflaxes, Canada thistle and others because it can encourage growth. 

Biological Control: 

This method is most commonly used on large infestations or hard to access areas where chemical and mechanical control is not cost effective.  Bio-control uses insects, which are natural predators to the specific weed in need of control, which feed on roots, seed heads, leaves or any combination.  This is a very effective and affordable control but the results are slower and will take years before they are visually noticed.

Will and Kate



Typically, an area will need to be reseeded if there is less than 30% desirable vegetation with in the project area.  The idea behind re-seeding is to use early germinating, fast growing native grasses and forbs to create competition and close off niches to noxious weeds.  Timing is crucial along with strong annual precipitation.  Ideally, weeds are treated using herbicide in the spring and depending on the chosen herbicide’s half-life, seed is distributed in the fall prior to the first snowfall.  Many of the species used will consist of winter germinating seeds and with success will be the first thing out of the ground in the spring.  This is especially important in cheat grass stands. 

man walking with seeder


Will surrounded by flying seed


Mapping & Monitoring:

Mapping is an integral part of weed management. Besides knowing where an infestation is, recording information like size and density allows us to monitor success of treatment.

Creating a treatment map will illustrate problem areas and help us to determine priority treatment areas for future applications.

We use advanced Trimble GPS units and advanced software to record data and develop maps. We follow state mapping standards, which allows our data to be shared (with your permission) to help obtain grant funding for your subsequent treatments.

computer with map and gps unit


Trimble GPS unit




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