General Information

Government Type

County

Entity

Washington County

Public Body

Washington County Weed Board

Notice Information

Add Notice to Calendar

Notice Title

Washington County Noxious Weed List

Notice Type(s)

Notice

Event Start Date & Time

April 25, 2026 12:00 AM

Event End Date & Time

April 1, 2027 12:00 AM

Description/Agenda

It is the Duty of every Property Owner to control and prevent the spread of Noxious Weeds on any land in his possession, or under his control. This notice serves as a warning that if he fails to comply with this notice, enforce weed control measures may be imposed at the direction of County Authorities. The following weeds are hereby officially designated and published as noxious for the State of Utah, as per the authority vested in the Commissioner of Agriculture and Food under Section 4-17-3: There are hereby designated five classes of noxious weeds in the state: Class 1A (EDRR Watch List), Class 1 (EDRR), Class 2 (Control), Class 3 (Containment), and Class 4 (Prohibited for sale or propagation). Class 1A: Early Detection Rapid Response (EDRR) Watch List Declared noxious and invasive weeds not native to the state of Utah and not known to exist in the State that pose a serious threat to the state and should be considered as a very high priority. Common crupina - Crupina vulgaris African rue - Peganum harmala Small bugloss - Anchusa arvensis Mediterranean sage - Salvia aethiopis Spring millet - Milium vernale Syrian beancaper - Zygophyllum fabago Ventenata (North Africa grass) - Ventenata dubia Plumeless thistle - Carduus acanthoides Malta starthistle - Centaurea melitensis Class 1B: Early Detection Rapid Response (EDRR) Declared noxious and invasive weeds not native to the State of Utah that are known to exist in the state in very limited populations and pose a serious threat to the state and should be considered as a very high priority. Camelthorn - Alhagi maurorum Garlic mustard - Alliaria petiolata Purple starthistle - Centaurea calcitrapa Goatsrue - Galega officinalis African mustard - Brassica tournefortii Giant reed - Arundo donax Japanese knotweed - Polygonum cuspidatum Blueweed (Vipers bugloss) - Echium vulgare Elongated mustard - Brassica elongata Common St. Johnswort - Hypericum perforatum Oxeye daisy - Leucanthemum vulgare Cutleaf vipergrass - Scorzonera laciniata Class 2: Control Declared noxious and invasive weeds not native to the state of Utah, that pose a threat to the state and should be considered a high priority for control. Weeds listed in the control list are known to exist in varying populations throughout the state. The concentration of these weeds is at a level where control or eradication may be possible. Leafy spurge - Euphorbia esula Medusahead - Taeniatherum caput-medusae Rush skeletonweed - Chondrilla juncea Spotted knapweed - Centaurea stoebe Purple loosestrife - Lythrum salicaria Squarrose knapweed - Centaurea virgata Dyers woad - Isatis tinctoria Yellow starthistle - Centaurea solstitialis Yellow toadflax - Linaria vulgaris Diffuse knapweed - Centaurea diffusa Black henbane - Hyoscyamus niger Dalmation toadflax - Linaria dalmatica Class 3: Containment Declared noxious and invasive weeds not native to the State of Utah that are widely spread. Weeds listed in the containment noxious weeds list are known to exist in various populations throughout the state. Weed control efforts may be directed at reducing or eliminating new or expanding weed populations. Known and established weed populations, as determined by the weed control authority, may be managed by any approved weed control methodology, as determined by the weed control authority. These weeds pose a threat to the agricultural industry and agricultural products. Russian knapweed - Acroptilon repens Houndstounge - Cynoglossum officianale Perennial pepperweed (Tall whitetop) - Lepidium latifolium Phragmites (Common reed) - Phragmites australis ssp. Tamarisk (Saltcedar) - Tamarix ramosissima Hoary cress - Cardaria spp. Canada thistle - Cirsium arvense Poison hemlock - Conium maculatum Musk thistle - Carduus nutans Quackgrass - Elymus repens Jointed goatgrass - Aegilops cylindrica Bermudagrass* - Cynodon dactylon Perennial Sorghum spp.: Johnson Grass (Sorghum halepense) and Sorghum almum (Sorghum almum). Scotch thistle (Cotton thistle) - Onopordum acanthium Field bindweed (Wild Morning-glory) - Convolvulus spp. Puncturevine (Goathead) - Tribulus terrestris *Bermudagrass (Cynodon dactylon) shall not be a noxious weed in Washington County and shall not be subject to provisions of the Utah Noxious Weed Law within the boundaries of that county. It shall be a noxious weed throughout all other areas of the State of Utah and shall be subject to the laws therein. Class 4: Prohibited Declared noxious and invasive weeds, not native to the state of Utah, that pose a threat to the state through the retail sale or propagation in the nursery and greenhouse industry. Prohibited noxious weeds are annual, biennial, or perennial plants that the commissioner designates as having the potential or are known to be detrimental to human or animal health, the environment, public roads, crops, or other property. Cogongrass (Japanese blood grass) - Imperata cylindrica Myrtle spurge - Euphorbia myrsinites Dames Rocket - Hesperis matronalis Scotch broom - Cytisus scoparius Russian olive - Elaeagnus angustifolia Each county in Utah may have different priorities regarding specific State designated Noxious Weeds and is therefore able to reprioritize these weeds for their own needs. The following weeds are hereby officially designated and published as noxious in Washington County, Utah : Halogeton Halogeton glomeratus Western Whorled Milkweed - Asclepias subverticillata Silverleaf Nightshade-Solanum elaeagnifolium Arundo donax - Giant reed The Weed Specialist coordinates weed control activities among the county weed organizations and the agricultural field representatives. Surveys of serious weed infestations are conducted and control programs are developed through the county supervisors, county weed boards, and various landowning agencies. The weed specialist and the inspectors work continually with extension and research personnel in encouraging the use of the most effective methods to control the more serious weeds.

Notice of Special Accommodations (ADA)

Washington County will make efforts to provide reasonable accommodations to disabled members of the public in accessing County programs. Please contact the Washington County Commission Office at 435-634-5700, in advance, if you have special needs.

Notice of Electronic or Telephone Participation

N/A

Meeting Information

Meeting Location

111 E Tabernacle St
St. George, UT 84770
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Contact Name

Sarah Lloyd

Contact Email

sarah.lloyd@washco.utah.gov

Notice Posting Details

Notice Posted On

April 23, 2026 08:24 AM

Notice Last Edited On

April 23, 2026 08:24 AM

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