Bannock County Noxious Weed Control
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Weed Control Regions Map

Idaho's Noxious Weeds

_What are noxious weeds? Noxious weeds are plant species that are non-native and invasive by nature. Many of these species make significant modifications to the landscape. Idaho currently has 64 listed noxious weeds throughout the state. There are different categories of control for each noxious weed as stipulated in the Idaho Administrative Procedures Act 02, title 06, chapter 22, “Noxious Weed Rules.” The categories affect how each weed is managed.

Statewide early detection and rapid response (EDRR) – plants in this category must be reported to the Idaho State Department of Agriculture (ISDA) within 10 days after being identified at the University of Idaho or by another qualified authority approved by the ISDA director. Eradication of these weeds must begin in the same season they are found.

Statewide control – plants in this list may already exist in some parts of the state. In some areas of the state control or eradication is possible and a plan must be written that will reduce infestations within five (5) years.

Statewide containment – plants in this category exist in the state. New or small infestations can be reduced or eliminated, while established populations may be managed as determined by the weed control authority, which is usually the county weed program.

_Idaho's 64 Noxious Weeds
(as listed in the Idaho’s Noxious Weeds handbook, 5th edition by U of I Extension)

Statewide Early Detection and Rapid Response (EDRR) List
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Common Name: Brazilian Elodea, Scientific Name: Egeria densa
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Common name: Common/European Frogbit, Scientific name: Hydrcharis morsus-ranae
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Common name: Fanwort, Scientific name: Cobomba caroliniana
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Common name: Feathered Mosquito Fern, Scientific name: Azolla pinnata
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Common name: Giant Hogweed, Scientific name: Heracleum mantegazzianum
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Common name: Giant Salvinia, Scientific name: Salvinia molesta
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Common name: Hydrilla, Scientific name: Hydrilla verticillata
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Common name: Policeman's Helmet, Scientific name: Impatiens glandulifera
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Common name: Squarrose Knapweed, Scientific name: Centaurea triumfetti
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Common name: Syrian Beancaper, Scientific name: Zygophyllum fabago
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Common name: Tall Hawkweed, Scientific name: Hieracium piloselloides
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Common name: Variable-Leaf-Milfoil, Scientific name: Myriophyllum heterophyllum
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Common name: Water Chestnut, Scientific name: Trapa natans
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Common name: Yellow Devil Hawkweed, Scientific name: Hieracium glomeratum
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Common name: Yellow Floating Heart , Scientific name: Nymphoides pelata
Statewide Containment List
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Common name: Black Henbane, Scientific name: Hyoscyamus niger
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Common name: Bohemian Knotweed, Scientific name: Polygonum bohemicum
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Common name: Buffalobur, Scientific name: Solanum rostratum
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Common name: Common Crupina, Scientific name: Crupina vulgaris
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Common name: Common Reed (Phragmites), Scientific name: Phragmites australis
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Common name: Dyer's Woad, Scientific name: Isatis Tinctoria
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Common name: Eurasian Watermilfoil, Scientific name: Myriophyllum spicatum
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Common name: Giant Knotweed, Scientific name: Polygonum sachalinense
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Common name: Japanese Knotweed, Scientific name: Polygonum cuspidatum
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Common name: Johnsongrass, Scientific name: Sorghum halepense
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Common name: Matgrass, Scientific name: Nardus stricta
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Common name: Meadow Knapweed, Scientific name: Centaurea debeauxii
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Common name: Mediterranean Sage, Scientific name: Salvia aethiopis
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Common name: Musk Thistle, Scientific name: Carduus nutans
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Common name: Orange Hawkweed, Scientific name: Hieracium aurantiacum
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Common name: Parrotfeather Milfoil, Scientific name: Myriophyllum aquaticum
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Common name: Perennial Sowthistle, Scientific name: Sonchus arvensis
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Common name: Russian Knapweed, Scientific name: Acroptilon repens
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Common name: Scotch Broom, Scientific name: Cytisus scoparius
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Common name: Small Bugloss, Scientific name: Anchusa arvensis
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Common name: Vipers Bugloss, Scientific name: Echium vulgare
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Common name: Yellow Hawkweed, Scientific name: Hieracium caespitosum
_Statewide Control List
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Common name: Canada Thistle, Scientific name: Cirsium arvense
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Common name: Curlyleaf Pondweed, Scientific name: Potamogeton crispus
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Common name: Dalmatian Toadflax, Scientific name: Linaria dalmatica ssp. dalmatica
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Common name: Diffuse Knapweed, Scientific name: Centaurea diffusa
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Common name: Field Bindweed/Morning Glory, Scientific name: Convolvulus arvensis
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Common name: Flowering Rush, Scientific name: Butomus umbelltus
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Common name: Hoary Alyssum, Scientific name: Hoary Alyssum
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Common name: Houndstounge, Scientific name: Cynoglossum officinale
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Common name: Jointed Goatgrass, Scientific name: Aegilpos cylindrica
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Common name: Leafy Spurge, Scientific name: Euphorbia esula
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Common name: Milium, Scientific name: Milium vernale
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Common name: Oxeye Daisy, Scientific name: Leucanthemum vulgare
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Common name: Perennial Pepperweed, Scientific name: Lepidium latifolium
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Common name: Plumeless Thistle, Scientific name: Carduus acanthoides
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Common name: Poison Hemlock, Scientific name: Conium maculatum
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Common name: Puncturevine, Scientific name: Tribulus terrestris
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Common name: Purple Loosestrife, Scientific name: Lythrum salicaria
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Common name: Rush Skeletonweed, Scientific name: Chondrilla juncea
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Common name: Saltcedar, Scientific name: Tamarix sp.
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Common name: Scotch Thistle, Scientific name: Onopordum acanthium
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Common name: Spotted Knapweed, Scientific name: Centaurea stoebe
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Common name: Tansy Ragwort, Scientific name: Senecio jacobaea
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Common name: White Bryony, Scientific name: Bryonia alba
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Common name: Whitetop, Scientific name: Cardaria draba
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Common name: Yellow Flag Iris, Scientific name: Iris psudocorus
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Common name: Yellow Starthistle, Scientific name: Centaurea solstitialis
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Common name: Yellow Toadflax, Scientific name: Linaria vulgaris
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Photo used under Creative Commons from John Tann
  • Home
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  • Community Interaction
    • Community Interaction
    • Education
    • Board of Directors
    • Equipment Rentals
  • Noxious Weed Control
    • Noxious Weed Control
    • Noxious Weed Facts
    • What Can You Do?
    • Request Service
    • No Spray Request Form
    • Idaho Code on Noxious Weeds
    • Program Application
  • Weed Identification
    • Weed Identification
    • Idaho Noxious Weeds
    • Bannock County Noxious Weeds
    • Archive - Weed of the Month
  • Contact Us
    • Contact Us
    • Our Staff
    • Employment
    • Helpful Links
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