Weed Department

Terry Turner - Supervisor
Dan McIntosh(Havre) - Weed Board Chairman
Gary Gregoire (South Havre) - Weed Board Member
Craig Patrick (Hingham) - Weed Board Member
Arleen Rice (Havre) - Weed Board Member
Robert Vosen (Fresno) - Weed Board Member


What is a noxious weed or weeds?
Any exotic plant species established or that may be introduced in the state which may render land unfit for agriculture, forestry, livestock, wildlife, or any other beneficial uses or that may harm native plant communities. Noxious weeds are designated by rule of the Department of Agriculture or by the County Weed Board. For more information on weed laws see the “County Noxious Weed Control Act” title 7, chapter 22 Sections MCA 1999 and Administrative rules ARM 4.5.201 through ARM 4.5.203.


Management of noxious weeds for Hill County

Priority 1A Noxious Weeds

Yellow starthistle (Centaurea solstitialis) – 100% eradication

Priority 1B Noxious Weeds
Dyer’s woad (Isatis tinctoria) – 100% eradication
Flowering rush (Butomus umbellatus) – 100% eradication
Japanese knotweed complex (Polygonum spp.) – 100% eradication
Purple loosestrife (Lythrum spp) – 100% eradication
Rush skeletonweed (Chondrilla juncea) – 100% eradication
Eurasian watermilfoil (Myriophyllum spicatum) – 100% eradication
Scotch broom (Cytisus scoparius) – 100% eradication
Curlyleaf pondweed (Potamageton crispus) – 100% eradication

Priority 2A Noxious Weeds
Tansy ragwort (Senecio jacobea) – 100% eradication
Meadow hawkweed complex (Hieracium spp.) – 100% eradication
Orange hawkweed (Hieracium aurantiacum) – 100% eradication
Tall buttercup (Ranunculus acris) – 100% eradication
Perennial pepperweed (Lepidum latifolium) – 100% eradication
Yellowflag iris (Iris pseudacorus) – 100% eradication
Blueweed (Echium vulgare) – 100% eradication
Hoary alyssum (Berteroa icana) – 100% eradication

Priority 2B Noxious Weeds
Canada thistle (Cirsium arvense) – Containment
Field bindweed (Convolvulus arvensis – Containment
Leafy spurge (Euphorbia esula) – 100% eradication
Whitetop (Cardaria draba) – 100% eradication
Russian knapweed (Centaurea repens) – 100% eradication
Spotted knapweed (Centaurea stoebe or maculosa) – 100% eradication
Diffuse knapweed (Centaurea diffusa) – 100% eradication
Dalmatian toadflax (Linaria dalmatica) – 100% eradication
St. Johnswort (Hypericum perforatum) – 100% eradication
Sulfur cinquefoil (Potentilla recta) – 100% eradication
Common tansy (Tanacetum vulgare) – 100% eradication
Oxeye daisy (Leucanthemum vulgare) – 100% eradication
Houndstongue (Cynoglossum officinale) – Containment
Yellow toadflax (Linaria vulgaris) – 100% eradication
Saltcedar (Tamarix spp) – 100% eradication

Hill County Noxious Weeds
Common Burdock (Arctium minus)—containment for large areas and eradication for small areas

Priority 3 Regulated Plants
Cheatgrass (Bromus tectorum)
Hydrilla (Hydrilla verticillata


Neighbors weeds bothering you???
Contact us and we will contact them.

What we can do for you?
Weed education – pamphlets, books, etc..
Control noxious weeds along county rights-of-way
Assist landowners with weed problems
Design weed management plans
Assist in noxious weed trust fund grants
Mowing contracts
Assist with bio-control releases
Weed law enforcement “Noxious Weed Law”
Assist in sprayer calibration
GPS weed mapping
Commercial spraying
Noxious weed seed free hay inspections and certifications
Backpack rentals
Source of various control agents for noxious weeds and rodent control
Designated county rodent control dealer
Strychnine oats (pocket gopher control)
Gas cartridges
Bait stations
Dippers & Canvas bags for poisons

Weed Tours

What you can do for us?
Find new infestations and report them.
Control current infestations
Buy certified hay
Buy certified seed
Clean vehicles after leaving an infested area
Learn to identify all noxious weeds

Terry Turner

Weed/ Mosquito District Supervisor