Noxious Weeds

R3-4-245.  Noxious Weeds

  1. Definitions. In addition to the definitions provided in A.R.S. § 3-201, A.A.C. R3-4-101 and R3-4-201, the following apply to this Section: 
    1. “Class A Noxious Weed” is categorized as a species of plant that is not known to exist or of limited distribution in the State and is a high priority pest for quarantine, control, or mitigation, Class A noxious weeds are listed in Table 4.
    2. “Class B Noxious Weed” is categorized as a species of plant that is known to occur, but of limited distribution in the State and may be a high priority pest for quarantine, control or mitigation if a significant threat to a crop, commodity, or habitat is known to exist. Class B noxious weeds are listed in Table 5.
    3. “Class C Noxious Weed” is categorized as a species of plant that is widespread but may be recommended for active control based on risk assessment. Class C noxious weeds are listed in Table 6.
  2.    Restrictions:
    1. No Class A, B, or C Noxious Weed, or commodity infested or contaminated with a Class A, B, or C Noxious Weed, shall be admitted into the state unless otherwise authorized by the Associate Director.
    2. The Department may quarantine and abate an area infested or contaminated with a Class A or Class B Noxious Weed if it has been determined by the Associate Director that an imminent threat to agriculture or horticulture exists.

 

Class A Noxious Weeds

Common name

Scientific name

African rue

Peganum harmala

Canada thistle

Cirsium arvense

Dudaim melon

Cucumis melo v. Dudaim Naudin

Dyer's woad

Isatis tinctoria

Floating water hyacinth

Eichhornia crassipes

Giant salvinia

Salvinia molesta

Globe-podded hoary cress

Lepidium (Cardaria) draba

Hydrilla

Hydrilla verticillata

Leafy spurge

Euphorbia esula

Plumeless thistle

Carduus acanthoides

Purple loosestrife

Lythrum salicaria

Purple starthistle

Centaurea calcitrapa

Quackgrass

Elymus repens (Elytrigia repens)

Rush skeletonweed

Chondrilla juncea

Southern sandbur

Cenchrus echinatus

Spotted knapweed

Centaurea stoebe ssp. micranthos      

Sweet resinbush

Euryops subcarnosus

Ward’s weed

Carrichtera annua

Wild mustard

Sinapis arvensis

 

Class B noxious weeds

Common name

Scientific name

African sumac Searsia lancea

Black mustard

Brassica nigra

Branched broomrape

Orobanche ramosa

Bull thistle

Cirsium vulgare

Camelthorn

Alhagi maurorum (A. pseudalhagi)

Dalmatian toadflax

Linaria dalmatica (L genistifolia v. dalmatica)

Diffuse knapweed

Centaurea diffusa

Field sandbur

Cenchrus spinifex  (synonym:  C. incertus)

Giant reed

Arundo donax

Halogeton

Halogeton glomeratus

Jointed goatgrass

Aegilops cylindrica

Malta starthistle

Centaurea melitensis

Musk thistle

Carduus nutans

Natal grass

Melinis repens

Onionweed

Asphodelus fistulosus

Ripgut brome bromus diandrus

Russian knapweed

Acroptilon repens

Russian olive

Elaeagnus angustifolia

Saharan mustard

Brassica tournefortii

Siberian elm Ulmus pumila

Stinknet (Globe chamomile)

Oncosiphon pilulifer (O. piluliferum)

Scotch thistle

Onopordum acanthium

Yellow bluestem

Bothriochloa ischaemum

Yellow starthistle

Centaurea solstitialis

 

Class C noxious weeds

Common name

Scientific name

Buffelgrass

Cenchrus ciliaris (Pennisetum ciliare)

Cheatgrass Bromus tectorum

Field bindweed

Convolvulus arvensis

Fountain grass                   

Pennisetum setaceum

Garden or common morning glory

Ipomoea purpurea

Grannyvine

Ipomoea tricolor

Ivy-leaf morning glory

Ipomoea hederacea

Johnsongrass

Sorghum halepense

Kochia

Kochia scoparia

Lehman's lovegrass Eragrostis lehmanniana

Morning glory

Ipomoea triloba

Morning glory

Ipomoea x leucantha

Puncturevine

Tribulus terrestris

Red Brome Bromus rubens

Salt cedar

Tamarix spp.

Siberian elm Ulmus pumila

Tree of heaven

Ailanthus altissima

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