Weed and Pest Declared List (By County) Amended April 2018

Weed and Pest Declared List (By County) Amended April 2018

Defined by Wyoming Statutes:

W.S. 11-5-102(a)(vii) ""Declared pest" means any animal or insect which the board and the Wyoming weed and pest council have found, either by virtue of its direct effect, or as a carrier of disease or parasites, to be detrimental to the general welfare of persons residing within a district;"

W.S. 11-5-102(a)(viii) ""Declared weed" means any plant which the board and the Wyoming weed and pest council have found, either by virtue of its direct effect, or as a carrier of disease or parasites, to be detrimental to the general welfare of persons residing within a district;"

W.S. 11-5-105(a)(vi) "Participate in programs for the control of declared weeds and declared pests not included on the designated list. Such programs do not qualify for cost-sharing from the department."

Procedures Defined by Wyoming Rules and Regulations:

Chapter 42. Board of Agriculture ? Weed and Pest Rules and Regulations

Section 4. Declared Pest and Declared Weed Program Participation Under W.S. 11-5-105(b)(vi).

Albany County

Cheatgrass / downy brome Plains larkspur/Geyer larkspur Locoweed Mosquito

Big Horn County

Baby's breath Common crupina (Woolly) Distaff thistle Field dodder Goatsrue Gorse Iberian starthistle Italian thistle Japanese knotweed Meadow knapweed Orange hawkweed Poison hemlock Puncturevine Purple starthistle Redstem filaree Rush skeletonweed Scentless chamomile Scotch broom Squarrose knapweed

Swainsonpea Sulfur cinquefoil Syrian beancaper Tansy ragwort Teasel Yellow hawkweed Venice mallow Viper's bugloss

Campbell County

Buffalobur Common Cocklebur Jointed goatgrass Mosquito Poison hemlock

Carbon County

Common cocklebur Halogeton Mosquito Plains pricklypear Plains larkspur/Geyer larkspur Wyeth lupine

Converse County

Bromus tectorum L. Delphinium geyeri Greene Oxytropis spp. Culicidae spp.

Absinth wormwood Alfalfa weevil Baby's breath

Buffalobur Bur buttercup

Gypsophila paniculata L. Crupina vulgaris Cass. Carthamus lanatus L. Cuscuta pentagona Engelm. Galega officinalis L. Ulex europaeus L. Centaurea iberica Trev. ex Spreng. Carduus pycnocephalus L. Fallopia japonica Centaurea pratensis Thuill. Hieracium aurantiacum L. Conium maculatum L. Tribulus terrestris L. Centaurea calcitrapa L. Erodium cicutarium (L.) L'Her. ex Ait. Chondrilla juncea L. Matricaria perforata Merat. Cytisus scoparius (L.) Link Centaurea virgata Lam. ssp. squarrosa (Willd.) Gugler Sphaerophysa salsula (Pallas) DC. Potentilla recta L. Zygophyllum fabago L. Senecio jacobaea L. Dipsacus fullonum L. Hieracium fendleri Sch. Bip. Hibiscus trionum L. Echium vulgare L.

Solanum rostratum Dunal Xanthium strumarium L. Aegilops cylindrica Host. Culex tarsalis Conium maculatum

Cheatgrass / downy brome Chicory Common cocklebur Common crupina Common sunflower Curly dock Curlycup gumweed Dames rocket Goatsrue Gorse Halogeton Iberian starthistle Italian thistle Jointed goatgrass Meadow knapweed Mosquito Musk mustard Orange hawkweed Plains larkspur/Geyer larkspur Poison hemlock Puncturevine Purple starthistle Redstem filaree Rush skeletonweed Sandbur Scentless chamomile Scotch broom Squarrose knapweed

Sulfur cinquefoil Syrian beancaper Tansy ragwort Teasel Wavyleaf thistle Western sticktight

Wild licorice Yellow hawkweed

Xanthium strumarium L.

Halogeton glomeratus (M. Bieb.) C.A. Mey. Culicidae spp. Opuntia polyacantha Haw. Delphinium geyeri Green Lupinus wyethii S. Watson.

Crook County

Buffalobur Bull thistle Common cocklebur Great plains yucca Plains pocket gopher Sulphur cinquefoil Wild licorice

Artemisia absinthium L. Hypera postica Gyllenhal Gypsophila paniculata L. Bull thistle Cirsium vulgare (Savi) Ten. Solanum rostratum Dunal Ceratocephala testiculata (Crantz) Roth Bromus tectorum L. Cichorium intybus L. Xanthium strumarium L. Crupina vulgaris Cass. Helianthus annuus L. Rumex crispus L. Grindelia squarrosa (Pursh) Dunal Hesperis matronalis L. Galega officinalis L. Ulex europaeus L. Halogeton glomeratus (M. Bieb.) C.A. Mey. Centaurea iberica Trev. ex Spreng. Carduus pycnocephalus L. Aegilops cylindrica Host. Centaurea pratensis Thuill. Culicidae spp.. Chorispora tenella (Pallas) DC. Hieracium aurantiacum L. Delphinium geyeri Greene Conium maculatum L. Tribulus terrestris L. Centaurea calcitrapa L. Erodium cicutarium (L.) L'Her.ex Ait Chondrilla juncea L. Cenchrus incertus Curtis Matricaria perforata Merat. Cytisus scoparius (L.) Link Centaurea virgata Lam. ssp. squarrosa (Willd.) Gugler Potentilla recta L. Zygophyllum fabago L. Senecio jacobaea L. Dipsacus fullonum L. Cirsium undulatum (Nutt.) Spreng. Lappula occidentalis (S. Wats.) Greene Glycyrrhiza lepidota Pursh Hieracium fendleri Sch. Bip..

Solanum rostratum Dunal Cirsium vulgare (Savi) Ten. Xanthium strumarium L. Yucca glauca Nutt. Geomys bursarius (Shaw) Potentilla recta L. Glycyrrhiza lepidota Pursh

Weed and Pest Declared List (By County) Amended April 2018

Fremont County

Baby's Breath Cheatgrass / downy brome Mosquito Oystershell Scale Puncturevine Swainsonpea Sulphur cinquefoil

Goshen County

Mosquito Puncturevine Wild licorice

Hot Springs County

Bull thistle Cheatgrass / downy brome Curlycup gumweed Duncecap larkspur Mosquito Plains larkspur/Geyer larkspur Puncturevine

Johnson County

Buffalobur Common cocklebur Curly dock Curlycup gumweed Duncecap larkspur Mosquito Moth Mullein Orange hawkweed Puncturevine Rocky Mountain Bee Plant Varroa mites Wild licorice

Laramie County

Cheatgrass / downy brome Puncturevine Hairy goldenaster Jointed goat grass Locoweed Plains pricklypear Plains larkspur/Geyer larkspur Plains pocket gopher Sandbur Viper's bugloss Wild licorice

Lincoln County

Alfalfa weevil Bull thistle Mosquito Plains pocket gopher Poison hemlock Poplar borer Western water hemlock

Wild oat

Gypsophila paniculata Bromus tectorum L. Culex tarsalis Lepidosaphes ulmi Tribulus terrestris L. Sphaerophysa salsula (Pallas) DC. Potentilla recta L.

Culicidae spp. Tribulus terrestris L. Glycyrrhiza lepidota Pursh

Cirsium vulgare (Savi) Ten. Bromus tectorum L. Grindelia squarrosa (Pursh) Dunal Delphinium occidentale (S. Watson) Culicidae spp. Delphinium geyeri Greene Tribulus terrestris L.

Solanum rostratum Dunal Xanthium strumarium L. Rumex crispus L. Grindelia squarrosa (Pursh) Dunal Delphinium occidentale (S. Watson) Culicidae spp. Verbascum blattaria Hieracium aurantiacum L. Tribulus terrestris L. Cleome serrulata Varroa destructor Glycyrrhiza lepidota Pursh

Bromus tectorum L. Tribulus terrestris L. Heterotheca villosa (Pursh) Shinners Aegilops cylindrica Host. Oxytropis spp. Opuntia polyacantha Haw. Delphinium geyeri Greene Geomys bursarius (Shaw) Cenchrus incertus Curtis Echium vulgare L. Glycyrrhiza lepidota Pursh

Hypera postica Gyllenhal Cirsium vulgare (Savi) Ten. Culicidae spp. Geomys bursarius (Shaw) Conium maculatum L. Saperda calcarata Cicuta douglasii (DC.) J.M. Coult. & Rose Avena fatua L.

Natrona County

Buffalobur Bulbous Bluegrass Cheatgrass / downy brome Common cocklebur Curlycup gumweed Curly dock Cutleaf Viper Grass Dames rocket Foxtail barley Halogeton Mosquito Puncturevine Western Salsify Wild licorice

Niobrara County

Buffalobur Douglas fir tussock moth Plains pocket gopher Showy milkweed Sulphur cinquefoil Wild licorice

Park County

Baby's Breath Blue Mustard Bull thistle Chicory Dames rocket Duncecap larkspur Emerald Ash Borer Hoary Alyssum Lanceleaf sage Plains larkspur/Geyer larkspur Redstem filaree Showy milkweed Sulphur cinquefoil White Campion Wild four o'clock Wild licorice

Platte County

Alfalfa weevil Black fly Buffalobur Bull thistle Cheatgrass / downy brome Chicory Common cocklebur Common sunflower Curlycup gumweed Curly dock Great plains yucca Jointed goatgrass Mosquito Plains larkspur/Geyer larkspur Plains pricklypear Pocket Gophers Poison hemlock Puncturevine Silky Crazyweed Western Salsify Western water hemlock

Wild licorice Wyeth lupine

Solanum rostratum Dunal Poa bulbosa L. Bromus tectorum L. Xanthium strumarium L. Grindelia squarrosa (Pursh) Dunal Rumex crispus L. Scorzonera laciniata L. Hesperis matronalis L. Hordeum jubatum L. Halogeton glomeratus (M. Bieb.) C.A. Mey. Culicidae spp. Tribulus terrestris L. Tragopogon dubious Scop. Glycyrrhiza lepidota Pursh

Solanum rostratum Dunal Orgyia pseudotsugata (McDunnough) Geomys bursarius (Shaw) Asclepias speciosa Torr. Potentilla recta L. Glycyrrhiza lepidota Pursh

Gypsophila paniculata Chorispora tenella Cirsium vulgare (Savi) Ten. Cichorium intybus L. Hesperis matronalis L. Delphinium occidentale (S. Watson) Agrilus planipennis Berteroa incana Salvia reflexa Hornem. Delphinium geyeri Greene Erodium cicutarium (L.) L'Her. Ex Ait. Asclepias speciosa Torr. Potentilla recta L. Silene latifolia Mirabilis nyctaginea Glycyrrhiza lepidota Pursh

Hypera postica Gyllenhal Simuliidae spp. Solanum rostratum Dunal Cirsium vulgare (Savi) Ten. Bromus tectorum L. Cichorium intybus L. Xanthium strumarium L. Helianthus annuus L. Grindelia squarrosa (Pursh) Dunal Rumex crispus L. Yucca glauca Nutt. Aegilops cylindrical Host Culicidae spp. Delphinium geyeri Greene Opuntia polyacantha Haw. Geomys and Thomomys spp. Conium maculatum L. Tribulus terrestris L. Oxytropis sericea (Nutt.) Tragopogon dubious Scop. Cicuta douglasii (DC.) J.M. Coult. & Rose Glycyrrhiza lepidota Pursh Lupinus wyethii S. Watson.

Weed and Pest Declared List (By County) Amended April 2018

Sheridan County

Alfalfa weevil Buffalobur Common cocklebur Common Lambsquarter Curly dock Mosquito Plains pocket gopher Poison hemlock Puncturevine Sulphur cinquefoil Western waterhemlock Wild licorice Varroa mites

Sublette County

Austrian fieldcress Cheatgrass / downy brome Field scabious Hoary alyssum Scentless chamomile Western water hemlock

Sweetwater County

Army cutworm Black fly Bull thistle Common Raven Common Reed Curlycup gumweed Curly dock Foxtail barley Lady's bedstraw Mosquito Mountain thermopsis Northern pocket gopher Poplar bud gall mite Showy milkweed Wild licorice

Teton County

Absinth wormwood Austrian fieldcress Baby's Breath Bohemian knotweed Bull thistle Cheatgrass / downy brome Chicory Curly-leaf pondweed Cypress spurge Dames rocket Eurasian watermilfoil Field scabious Giant knotweed Himalayan knotweed Hoary alyssum Japanese knotweed Meadow knapweed Mosquito Moth Mullein Myrtle spurge Orange hawkweed Poison hemlock Puncturevine Rush skeltonweed Scentless chamomile Squarrose knapweed

Sulfur cinquefoil Tall buttercup Teasel Yellow chamomile Yellow hawkweed Yellow flag iris Water hyacinth

Water lettuce

Uinta County

Hypera postica Gyllenhal Solanum rostratum Dunal Xanthium strumarium L. Chenopodium album L. Rumex crispus L. Culicidae spp. Geomys bursarius (Shaw) Conium maculatum Tribulus terrestris L. Potentilla recta L. Cicuta douglasii Glycyrrhiza lepidota Pursh Varroa destructor

Rorippa austriaca (Crantz) Bess. Bromus tectorum L. Knautia arvensis (L.) Coult. Berteroa incana (L.) DC. Matricaria perforata Merat. Cicuta douglasii (DC.) J.M. Coult. & Rose

Euxos auxilliarius Simulium vittatum Zetterstedt Cirsium vulgare (Savi) Ten. Corvus corax Phragmites australis Grindelia squarrosa (Pursh) Dunal Rumex crispus L. Hordeum jubatum L. Galium verum L. Culicidae spp. Thermopis montana Nutt. Thomomys talpoides Eriophes parapopuli Keifer Asclepias speciosa Torr. Glycyrrhiza lepidota Pursh

Artemisia absinthium L. Rorippa austriaca (Crantz) Bess Gypsophila paniculata

Cirsium vulgare (Savi) Ten. Bromus tectorum L. Cichorium intybus L. Potamogeton crispus Euphorbia cyparissias L. Hesperis matronalis L. Myriophyllum spicatum Knautia arvensis (L.) Coult. Fallopia sachalinensis Polygonum polystachyum Berteroa incana (L.) DC. Fallopia japonica (Houtt.) Centaurea pratensis Thuill. Culicidae spp. Verbascum blattaria Euphorbia myrsinites L. Hieracium aurantiacum L. Conium maculatum Tribulus terrestris L. Chondrilla juncea L. Matricaria perforata Merat. Centaurea virgata Lam. ssp. squarrosa (Willd.) Gugler Potentilla recta L. Ranunculus acris L. Dipsacus fullonum L. Anthemis tinctoria Hieracium fendleri Sch. Bip. Iris pseudacorus Eichhornia crassipes (Mart.) Solms.Laubach Pistia stratiotes

Alfalfa weevil Golden pea Mosquito Viper's bugloss Sheep keds Sulphur cinquefoil

Washakie County

Absinth wormwood Cheatgrass / downy brome Common crupina (Woolly) Distaff thistle Duncecap Larkspur Iberian starthistle Italian thistle Meadow knapweed Mosquito Orange hawkweed Puncturevine Purple starthistle Rush skeltonweed Sandbur Scentless chamomile Scotch broom Squarrose knapweed

Sulfur cinquefoil Swainsonpea Tansy ragwort Teasel Venice mallow Wild licorice Yellow hawkweed

Weston County

Black medic Broom snakeweed

Cheatgrass / downy brome Common purslane Curly dock Musk mustard Puncturevine Sulfur cinquefoil Wild licorice

Hypera postica Gyllenhal Thermopsis rhombifolia Culicidae spp. Echium vulgare L. Melophagus ovinus Potentilla recta L.

Artemisia absinthium L. Bromus tectorum L. Crupina vulgaris Cass. Carthamus lanatus L. Delphinium occidentale (S. Watson) Centaurea iberica Trev. ex Spreng. Carduus pycnocephalus L. Centaurea pratensis Thuill. Culicidae spp. Hieracium aurantiacum L. Tribulus terrestris L. Centaurea calcitrapa L. Chondrilla juncea L. Cenchrus incertus Curtis Matricaria perforata Merat. Cytisus scoparius (L.) Link Centaurea virgata Lam. ssp. squarrosa (Willd.) Gugler Potentilla recta L. Sphaerophysa salsula (Pallas) DC. Senecio jacobaea L. Dipsacus fullonum L. Hibiscus trionum L. Glycyrrhiza lepidota Pursh Hieracium fendleri Sch. Bip.

Medicago lupulina L. Gutierrezia sarothrae (Pursh) Britton & Rusby Bromus tectorum L. Portulaca oleracea L. Rumex crispus L. Chorispora tenella (Pallas) DC. Tribulus terrestris L. Potentilla recta L. Glycyrrhiza lepidota Pursh

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