Idaho Administrative Code
Title IDAPA 02 - Agriculture, Department of
Rule 02.06.09 - RULES GOVERNING INVASIVE SPECIES AND NOXIOUS WEEDS
Subchapter B - NOXIOUS WEEDS
Section 02.06.09.220 - NOXIOUS WEEDS - DESIGNATIONS

Universal Citation: ID Admin Code 02.06.09.220

Current through September 2, 2024

The weeds listed on the Statewide Prohibited Genera, EDRR, Containment, and Control lists are hereby officially designated and published as noxious.

01. Statewide Prohibited Genera Noxious Weed List.

a. All plants and plant parts in the genera of: Cytisus, Genista, Spartium, and Chamaecytisus additionally including "all" subtaxa of these plant genera are prohibited in Idaho.

b. Weeds listed in the Prohibited Genera list may exist in varying populations throughout the state. The concentration of these weeds is at a level where control and/or eradication may be possible. A written plan for weeds on the Statewide Prohibited Genera Noxious Weed List shall be developed by the control authority that specifies active control methods to reduce known populations in not more than five (5) years. The plan shall be available to the Department upon request.

02. Statewide EDRR Noxious Weed List. If any of the listed plants (Subsection 220.02) are found to occur in Idaho, they shall be reported to the Department within ten (10) days following positive identification by the University of Idaho or other qualified authority as approved by the Director. These weeds shall be eradicated during the same growing season as identified.

Common Name

Scientific Name

1. Brazilian Elodea

Egeria densa

2. Cogongrass

Imperata cylindrica

3. Common/European Frogbit

Hydrocharis morsus-ranae

4. Fanwort

Cabomba caroliniana

5. Feathered Mosquito Fern

Azolla pinnata

6. Giant Hogweed

Heracleum mantegazzianum

7. Giant Salvinia

Salvinia molesta

8. Goatsrue

Galega officinalis

9. Hydrilla

Hydrilla verticillata

10. Iberian Starthistle

Centaurea iberica

11. Policeman's Helmet

Impatiens glandulifera

12. Purple Starthistle

Centaurea calcitrapa

13. Squarrose Knapweed

Centaurea triumfetti

14. Starry Stonewort

Nitellopsis obtusa

15. Syrian Beancaper

Zygophyllum fabago

16. Tall Hawkweed

Hieracium piloselloides

17. Turkish Thistle

Carduus cinereus

18. Variable-Leaf-Milfoil

Myriophyllum heterophyllum

19. Water Chestnut

Trapa natans

20. Water Hyacinth

Eichhornia crassipes

21. Yellow Devil Hawkweed

Hieracium glomeratum

22. Yellow Floating Heart

Nymphoides pelata

03. Statewide Control Noxious Weed List. Weeds listed in the control list are known to exist in varying populations throughout the state. The concentration of these weeds is at a level where control or eradication, or both, may be possible. A written plan for weeds on the Statewide Control Noxious Weed List shall be developed by the control authority that specifies active control methods to reduce known populations in not more than five (5) years. The plan shall be available to the Department upon request.

Common Name

Scientific Name

1. Black Henbane

Hyoscyamus niger

2. Bohemian Knotweed

Polygonum X bohemicum

3. Common Crupina

Crupina vulgaris

4. Common Reed (Phragmites)

Phragmites australis

5. Dyer's Woad

Isatis tinctoria

6. Eurasian Watermilfoil

Myriophyllum spicatum (and hybrids)

7. Flowering Rush

Butomus umbellatus

8. Giant Knotweed

Polygonum sachalinense

9. Japanese Knotweed

Polygonum cuspidatum

10. Johnsongrass

Sorghum halepense

11. Matgrass

Nardus stricta

12. Meadow Knapweed

Centaurea debeauxii

13. Mediterranean Sage

Salvia aethiopis

14. Musk Thistle

Carduus nutans

15. Orange Hawkweed

Hieracium aurantiacum

16. Parrotfeather Milfoil

Myriophyllum aquaticum

17. Perennial Sowthistle

Sonchus arvensis

18. Russian Knapweed

Acroptilon repens

19. Scotch Broom

Cytisus scoparius

20. Small Bugloss

Anchusa arvensis

21. Vipers Bugloss

Echium vulgare

22. Yellow Hawkweed

Hieracium caespitosum

04. 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 known and established weed populations, as determined by the weed control authority, may be managed by any approved weed control methodology, as determined by the weed control authority.

Common Name

Scientific Name

1. Canada Thistle

Cirsium arvense

2. Curlyleaf Pondweed

Potamogeton crispus

3. Dalmatian Toadflax

Linaria dalmatica ssp. dalmatica

4. Diffuse Knapweed

Centaurea diffusa

5. Field Bindweed

Convolvulus arvensis

6. Hoary Alyssum

Berteroa incana

7. Houndstongue

Cynoglossum officinale

8. Jointed Goatgrass

Aegilops cylindrica

9. Leafy Spurge

Euphorbia esula

10. Milium

Milium vernale

11. Oxeye Daisy

Leucanthemum vulgare

12. Perennial Pepperweed

Lepidium latifolium

13. Plumeless Thistle

Carduus acanthoides

14. Poison Hemlock

Conium maculatum

15. Puncturevine

Tribulus terrestris

16. Purple Loosestrife

Lythrum salicaria

17. Rush Skeletonweed

Chondrilla juncea

18. Saltcedar

Tamarix spp.

19. Scotch Thistle

Onopordum acanthium

20. Spotted Knapweed

Centaurea stoebe

21. Tansy Ragwort

Senecio jacobaea

22. White Bryony

Bryonia alba

23. Whitetop (Hoary Cress)

Cardaria draba

24. Yellow Flag Iris

Iris pseudocorus

25. Yellow Starthistle

Centaurea solstitialis

26. Yellow Toadflax

Linaria vulgaris

05. Designation of Articles Capable of Disseminating Noxious Weeds. The following articles are designated by the Director as capable of disseminating noxious weeds:

a. Construction equipment, road building and maintenance equipment, and implements of husbandry.

b. Motorized vehicles such as, all-terrain vehicles, motorcycles, and other off-road vehicles and non-motorized vehicles such as bicycles and trailers.

c. Grain and seed.

d. Hay, straw and other material of similar nature.

e. Nursery stock including plant material propagated for the support of aquarium, pet, or horticultural activities.

f. Feed and seed screenings.

g. Fence posts, fencing and railroad ties.

h. Sod.

i. Manure, fertilizers and material of similar nature.

j. Soil, sand, mulch, and gravel.

k. Boats, personal watercraft, watercraft trailers, and items of a similar nature.

Effective July 1, 2024

Disclaimer: These regulations may not be the most recent version. Idaho may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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