## New Mexico Department of Agriculture

Office of the Director/Secretary

MSC 3189

New Mexico State University

P.O. Box 30005

Las Cruces, NM 88003-8005

Phone: (575) 646-3007

April 1, 2009

MEMORANDUM

TO: General Public

FROM: I. Miley Gonzales, Ph.D.

SUBJECT: New Mexico Noxious Weed List Update

The Director of the New Mexico Department of Agriculture has selected the following plant species (see

attached New Mexico Noxious Weed List) to be targeted as noxious weeds for control or eradication

pursuant to the Noxious Weed Management Act of 1998.

Petitions to add new plant species to the state noxious weed list were solicited and received by the New

Mexico Department of Agriculture (NMDA) from Cooperative Weed Management Areas, individuals,

agencies and organizations. The petitions were re viewed by the New Mexico Weed List Advisory

Committee using ecological, distribution, impact, and le gal status criteria within the State of New Mexico

and adjoining states.

During its review the committee recommended the establis hment of a new “watch list” category. This

category contains plant species that have the potential to be problematic. More data is needed in order to

determine if the species should be listed. Placing a pl ant species on the watch list will raise awareness of

the species, and promote data collection and reporting efforts statewide. This will provide the data

needed to determine if the plant should be listed.

This list does not include every plant species with the potential to negatively impact the state’s

environment or economy. Landowne rs and land managers are encouraged to recognize plant species

listed on the federal noxious weed list and other wester n states’ noxious weed lists as potentially having

negative impacts and to manage them accordingly.

attachment: New Mexico Noxious Weed List

IMG/jm/jw

### Hydrilla Hydrilla verticllata 

# New Mexico Noxious Weed List

Update April 2009



## Class A Specie s

Class A species are currently not present in New Mexico, or have limited distribution. Preventing new

infestations of these species and eradicating existing infestations is the highest priority.

Commom Name Scientific Name



### Alfombrilla Drymaria arenariodes

Black henbane Hyoscyamus niger

Camelthorn A lhagi psuedalhagi

Canada thistle Cirsium arvense

Dalmation toadflax Linaria dalmatica

Diffuse knapweed Centaurea diffusa

Dyer’s woad Isatis tinctoria

Eurasian watermilfoil Myriophyllum spicatum

Giant salvinia Salvinia molesta

Hoary cress Cardaria spp.

Hydrilla Hydrilla verticllata

Leafy spurge Euphorbia esula

Oxeye daisy Leucanthemum vulgare

Parrotfeather Myriophyllum aquaticum

Purple loosestrife Lythrum salicaria

Purple starthistle Centaurea calcitrapa

Ravenna grass Saccharum ravennae

Scotch thistle Onopordum acanthium

Spotted knapweed Centaurea biebersteinii

Yellow starthistle Centaurea solstitialis

Yellow toadflax Linaria vulgaris



## Class B Species

Class B Species are limited to portions of the state. In areas with severe infestations, management

should be designed to contain the infestation and stop any further spread.

Common Name Scientific Name

African rue Peganum harmala

Chicory Cichorium intybus

Halogeton Halogeton glomeratus

Malta starthistle Centaurea melitensis

Musk thistle Carduus nutans

Perennial pepperweed Lepidium latifoliumWatch List species are species of concern in the state These species have the potential to become problematic

Wall rocket Diplotaxis tenuifolia Russian knapweed A croptilon repens

Poison hemlock Conium maculatum

Teasel Dipsacus fullonum

Tree of heaven A ilanthus altissima



## Class C Specie s

Class C species are wide

‐ spread in the state. Management decisions for these species should be

determined at the local level, based on feasibility of control and level of infestation.

Common Name Scientific Name

Bull thistle Cirsium vulgare

Cheatgrass Bromus tectorum

Jointed goatgrass A egilops cylindrica

Russian olive Elaeagnus angustifolia

Saltcedar Tamarix spp.

Siberian elm Ulmus pumila



## Watch List Species

Watch List species are species of concern in the state. These species have the potential to become problematic.

More data is needed to determine if these species should be listed. When these species are encountered

please document their location and contact appropriate authorities.

Common Name Scientific Name

Crimson fountaingrass Pennisetum setaceum

Giant cane A rundo donax

Meadow knapweed Centaurea pratensis

Pampas grass Cortaderia sellonana

Quackgrass Elytrigia repens

Sahara mustard Brassica tournefortii

Spiny cocklebur X anthium spinosum