Noxious Weed List A

COLORADO STATE NOXIOUS WEED LIST

List A

List A species in Colorado that are designated by the Commissioner for eradication

Common Name

Scientific Name

Resource

African rue

Peganum Harmala

African rue Fact Sheet (PDF)

Bohemian knotweed

Polygonum x bohemicum

Knotweeds fact sheet (PDF)

Camelthorn

Alhagi pseudalhagi

Camelthorn fact sheet (PDF)

Common crupina

Crupina vulgaris

Common crupina fact sheet (PDF)

Cypress spurge

Euphorbia cyparissias

Cypress spurge fact sheet (PDF)

Dyer’s woad

Isatis tinctoria

Dyer's woad fact sheet (PDF)

Elongated mustard

Brassica elongata

Giant Knotweed

Polygonum sachalinense

Knotweeds fact sheet (PDF)

Giant reed

Arundo donax

Giant Reed Fact Sheet (PDF)

Giant salvinia

Salvinia molesta

Giant Salvinia Fact Sheet (PDF)

Hydrilla

Hydrilla verticillata

Hydrilla fact sheet (PDF)

Japanese knotweed

Polygonum cuspidatum

Knotweeds fact sheet (PDF)

Meadow knapweed

Centaurea pratensis

Meadow knapweed fact sheet (PDF)

Mediterraanean sage

Salvia aethiopis

Mediterranean sage fact sheet (PDF)

Medusahead

Taeniatherum caput-medusae

Medusahead rye fact sheet (PDF)

Myrtle spurge

Euphorbia myrsinites

Myrtle spurge fact sheet (PDF)

Orange hawkweed

Hieracium aurantiacum

Orange hawkweed fact sheet (PDF)

Purple loosestrife

Lythrum salicaria

Purple loosestrife fact sheet (PDF)

Rush skeletonweed

Chondrilla juncea

Rush skeletonweed fact sheet (PDF)

Squarrose knapweed

Centaurea virgate

Squarrose knapweed fact sheet (PDF)

Tansy ragwort

Senecio Jacobaea

Tansy ragwort fact sheet (PDF)

Yellow starthistle

Centaurea solstitialis

Yellow starthistle fact sheet (PDF)