The Upper Payette and Boise Basin CWMA’s with funding from Boise County and the Idaho Department of Agriculture  will again offer assistance to area landowners for the treatment of Spotted Knapweed.  Pre-mixed herbicide and safety equipment will be available at the following dates, times and locations.

Garden Valley area:  May 17 & 18.  8am to 5pm.

Boise County Road Shop on the Banks/Lowman road.

Idaho City area:   May 31 & June 1.  8am to 5pm.

Boise County Road Shop on Buena Vista road.

As long as chemical lasts June 8, 15 & 22.  10am to 4pm

Boise County Collection site on Centerville road.

Horseshoe Bend area:  For White Top and Scotch Thistle.

Please contact the Boise County Noxious Weed Dept.

for more information. 

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  Spotted Knapweed is one of the most prevalent noxious weeds in Boise County

Control of Noxious Weeds is the Landowner’s Responsibility

Idaho Code 22-2407. LANDOWNER AND CITIZEN DUTIES.
(1) It shall be the duty and responsibility of all landowners to control noxious weeds on their
land and property, in accordance with this chapter and with rules promulgated by the director.
(2) The cost of controlling noxious weeds shall be the obligation of the landowner.
(3) Noxious weed control must be for prevention, eradication, rehabilitation, control or
containment efforts. However, areas may be modified from the eradication requirement if the
landowner is a participant in a county-approved weed management plan or county-approved
cooperative weed management area.
(4) The landowner shall reimburse the county control authority for work done because of failure
to comply with a five (5) day notice, as outlined in section 22-2405, Idaho Code.
(5) If an article is infested with noxious weeds, it shall not be moved from designated premises
until it is treated in accordance with the applicable rules, or in accordance with the written permission
of a control authority.

Idaho has 64 different species of weeds, which are designated noxious by state law.

+ Denotes Statewide Early Detection/Rapid Response Noxious Weed List.
Weeds identified within Idaho shall be eradicated during the same growing season as identified.

# Denotes Statewide Containment Noxious Weed List. Weeds listed in the containment noxious
weeds list are known to exist in various populations throughout the state. Weed control efforts may be
directed at reducing or eliminating new or expanding weed populations while know and established
weed populations, as determined by the weed control authority, may be managed by any approved
weed control methodology, as determined by the seed control authority.

*Denotes Noxious Weeds found in Boise County

Link to noxious weed law

 http://www.agri.state.id.us/Categories/PlantsInsects/NoxiousWeeds/weedlaws.php 

For more information on noxious weeds

Idaho State Department of Agriculture
Center for Invasive Plant Management
Herbicide Labels and Material Safety Data Sheets
Pacific Northwest Weed Control Handbook at Oregon State

Idaho Department of Health and Welfare