Noxious Weeds & Invasive Species Control Department

665 N. 2880 E.  (PO Box 268) Roberts, ID 83444

Hours: Mon – Thur 7:00 – 5:30

Mitch Whitmill – Superintendent

Email: or

Office: 208-745-9221  Cell:208-390-3125  Fax: 208-228-6055


We will offer backpack rentals by appointment only. Please call one of the numbers above to make arrangements.  Thank you for your patience!

Idaho Concerns

65 -- Noxious Weeds

131 – Invasive Species

           1-Mammal, 12 Aquatic Invertebrates, 43-Insects, 14-Fish, 1-Bird, 6-Reptiles,    2-Amphibians, 36-Pathogen & Parasitic Nematodes and 16 Molusks (Snails & Slugs)

Related Links

Idaho Noxious Weed Law 

Idaho Invasive Species Act of 2008

Idaho Weed Awareness Campaign

USGS - Nonindigenous Aquatic Species

Eurasian Watermilfoil

Rush Skeleton Weed


Zebra and Quagga mussels


Quagga/Zebra Mussels

Water filterers, they remove nutrients from the water which alters the food web. Their ability to rapidly colonize hard surfaces and clog pipes cause serious economic problems.

From This                 To This in Only 18 Months 



Eurasian Watermilfoil

This plant can reproduce from a small fragment. It creates a dense mat in waterways becoming a danger to fish, native aquatic plants, swimmers & boaters.

Leafy Spurge

This plant produces a milky juice that can cause blisters and if gotten in the eyes can cause permanent blindness.


Russian Knapweed

This plant is very toxic to horses, it can cause irreversible brain damage and chewing disease.



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