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Noxious Weed List C & Watch List



List C weed species are species for which the Commissioner, in consultation with the state noxious weed advisory committee, local governments, and other interested parties, will develop and implement state noxious weed management plans designed to support the efforts of local governing bodies to facilitate more effective integrated weed management on private and public lands. The goal of such plans will not be to stop the continued spread of these species but to provide additional education, research, and biological control resources to jurisdictions that choose to require management of List C species.


Common Name

Scientific Name


Bulbous bluegrass

Poa bulbosa



Cichorium intybus


Common burdock

Arctium minus


Common mullein

Verbascum Thapsus


Common St. Johnswort

Hypericum perforatum


Downy brome

Bromus tectorum


Field bindweed

Convolvulus arvensis

Field bindweed fact sheet (PDF)


Halogeton glomeratus



Sorghum halepense


Jointed goatgrass

Aegilops cylindrical


Perenneial sowthistle

Sonchus arvensis


Poison hemlock

Conium maculatum



Tribulus terrestris


Redstem filaree

Erodium cicutarium

Redstem filaree fact sheet (PDF)


Abutilon theophrasti


Wild proso millet

Panicum miliaceum





Watch list

Watch List weed species that have been determined to pose a potential threat to the agricultural productivity and environmental values of the lands of the state. The Watch List is intended to serve advisory and educational purposes only. Its purpose is to encourage the identification and reporting of these species to the Commissioner in order to facilitate the collection of information to assist the Commissioner in determining which species should be designated as noxious weeds.


Common Name

Scientific Name

Asian mustard

Brassica tournefortii


Baby’s breath

Gypsophila paniculata


Bathurst burr, Spiney cocklebur  Xanthium spinosum


Common bugloss

Anchusa officinalis


Common reed

Phragmites australis


Flowering rush

butomus umbellatus


Hairy willow-herb

Epilobium hirsutum


Himalayan blackberry

Rubus armeniacus


Japanese blood grass

Imperata cylindrical


Meadow hawkweed

Hieracium caespitosum



Asphodelus fistulosus


Pampas grass

Cortideria jubata


Scotch broom

Cytisus scoparius


Sericea lespedeza

Lespedeza cuneata



Sphaerophysa salsula


Syrian beancaper

Zygophyllum fabago


Water hyacinth

Eichhornia crassipes


Water lettuce

Pistia stratiotes


White bryony

Bryonia alba


Woolly distaff thistle

Carthamus lanatus