Attachment01.docx

AG-03R6-S-11-0050

Selway Bitterroot Invasive Plant Treatment IDIQ/Bitterroot NF Attachment 01

Contract Target Species List Montana Noxious Weed List Effective: September 2010

Priority 1A

These weeds are not present in Montana. Management criteria will require eradication if detected; education; and prevention.

- Yellow starthistle (Centaurea solstitialis)

Priority 1B

These weeds have limited presence in Montana. Management criteria will require eradication or containment and education.

- Dyer’s woad (Isatis tinctoria)

- Flowering rush (Butomus umbellatus)

- Japanese knotweed complex (Polygonum spp.)*

- Purple loosestrife (Lythrum spp.)

- Rush skeletonweed (Chondrilla juncea)*

- Eurasian watermilfoil (Myriophyllum spicatum)

- Scotch broom (Cytisus scoparius)*

- Curlyleaf pondweed (Potamogeton crispus)

Priority 2A

These weeds are common in isolated areas of Montana. Management criteria will require eradication or containment where less abundant. Management shall be prioritized by local weed districts.

- Tansy ragwort (Senecio jacobaea)

- Meadow hawkweed complex (Hieracium spp.)*

- Orange hawkweed (Hieracium aurantiacum)*

- Tall buttercup (Ranunculus acris)*

- Perennial pepperweed (Lepidium latifolium)

- Yellowflag iris (Iris pseudacorus)

- Blueweed (Echium vulgare)*

- Hoary alyssum (Berteroa incana)*

Priority 2B

These weeds are abundant in Montana and widespread in many counties.

Management criteria will require eradication or containment where less abundant. Management shall be prioritized by local weed districts.

- Canada thistle (Cirsium arvense)*

- Field bindweed (Convolvulus arvensis)*

- Leafy spurge (Euphorbia esula)*

- Whitetop (Cardaria draba)*

- Russian knapweed (Centaurea repens)

- Spotted knapweed (Centaurea stoebe or maculosa)*

- Diffuse knapweed (Centaurea diffusa)*

- Dalmatian toadflax (Linaria dalmatica)*

- St. Johnswort (Hypericum perforatum)*

- Sulfur cinquefoil (Potentilla recta)*

- Common tansy (Tanacetum vulgare)*

- Oxeye daisy (Chrysanthemum leucanthemum or Leucanthemum vulgare)*

- Houndstongue (Cynoglossum officinale)*

- Yellow toadflax (Linaria vulgaris)*

- Saltcedar (Tamarix spp.)

Priority

Regulated Plants: (NOT MONTANA LISTED NOXIOUS WEEDS) These regulated plants have the potential to have significant negative impacts.

The plant may not be intentionally spread or sold other than as a contaminant in agricultural products. The state recommends research, education and prevention to minimize the spread of the regulated plant.

- Cheatgrass (Bromus tectorum)*

- Hydrilla (Hydrilla verticillata)

- Russian olive (Elaeagnus angustifolia)

Ravalli County Noxious Weed List

Italian bugloss Anchusa azurea bugloss Anchusa officinalis

Bull thistle * Cirsium vulgare CIRVU

Musk thistle * Carduus nutans CRUNU

Field scabious* Knautia arvensis

Black henbane * Hyoscyamus niger HSYNI

** Note: Other new invaders, identified as a concern by the States or Counties, may be added to the list of target at anytime.