Scientific Name Common Name Spartina patens salt meadow cordgrass Myriophyllum parrotfeather Spartium junceum Spanish broom aquaticum Stratiotes aloides water soldier Myriophyllum variable-leaf milfoil heterophyllum Tamarix ramosissima saltcedar Myriophyllum spicatum Eurasian watermilfoil Thymelaea passerina spurge flax Najas minor slender-leaved naiad, brittle naiad Torilis arvensis hedgeparsley Nymphoides peltata yellow floating heart Trapa natans water chestnut, bull nut Onopordum acanthium Scotch thistle Trapa bicornus water caltrap, devil's pod, bat nut Polygonum cuspidatum Japanese knotweed Ulex europaeus gorse, furze Polygonum polystachyum Himalayan knotweed Utricularia inflata swollen bladderwort Polygonum sachalinense giant knotweed Zygophyllum fabago Syrian bean-caper A Summary of Current Polygonum x bohemicum Bohemian knotweed, Regulations on Sales of Noxious Japanese and giant knotweed hybrid Please note: This list is comprised of the most recent Weeds and Other Invasive and accepted scientific and common names of the quar- Exotic Plants Proboscidea louisianica unicorn-plant antine plant species. Regulated status also applies to all synonyms of these botanical names and interspecies Pueraria montana var. kudzu hybrids if both parents are regulated species. lobata Sagittaria graminea grass-leaved arrowhead Copies of the quarantines may be obtained from: Sagittaria platyphylla delta arrowhead Salvia aethiopis Mediterranean sage Washington State Department of Agriculture Plant Protection Division Salvia pratensis meadow clary P. O. Box 42560 Olympia, WA 98504-2560 Salvia sclarea clary sage http://agr.wa.gov/PlantsInsects/PlantQuarantines/ Schoenoplectus ricefield bulrush PlantQuarantines.aspx mucronatus For more information contact: Senecio jacobaea tansy ragwort WAC 16-752-600 through 660 Plant Services Program Silybum marianum milk thistle (360) 902-1874 [email protected] Solanum elaeagnifolium silverleaf nightshade WSDA Weed Specialist - Yakima Office Solanum rostratum buffaloburr (509) 249-6973 Soliva sessilis lawnweed Washington State Noxious Weed Control Board Washington State Sorghum halepense johnsongrass (360) 725-5764 Department of Agriculture Plant Protection Division Spartina alterniflora smooth cordgrass Plant Services Program Spartina anglica common cordgrass Inquiries regarding availability of this publication in alterna- Revised August 2016 tive formats should be directed to the WSDA Information Spartina densiflora dense-flowered cordgrass Office at (360) 902-1813 or Telecommunications Device for the Deaf (360) 902-1996 Carduus nutans musk thistle, nodding thistle Gymnocoronis spilan- Senegal tea plant thoides; Every year noxious weeds and other invasive exotic Carduus pycnocephalus Italian thistle plants cost Washington millions of dollars in lost produc- Helianthus ciliaris Texas blueweed tion, public and private control costs, and environmental Carduus tenuiflorus slenderflower thistle degradation. These exotic introductions to Washington have displaced native plant communities, damaged range Centaurea calcitrapa purple star thistle Heracleum giant hogweed, giant cow and recreational lands, and degraded fragile wetlands. mantegazzianum parnip Escaped ornamentals are one significant source of infes- Centaurea diffusa diffuse knapweed tation. It is often difficult to predict which ornamentals will Hibiscus trionum Venice mallow, flower-of-an- be invasive and aggressive. Scotch broom, purple loose- Centaurea jacea brown knapweed, rayed knap- hour, bladder ketmia, strife, and kochia are prime examples of plants which weed, brown centaury, horse- modesty, shoo-fly have escaped cultivation and caused enormous economic knobs, hardheads and environmental damage. The quarantines identify Hieracium spp. all nonnative hawkweed spe- Centaurea macrocephala bighead knapweed plants known to be invasive and a detriment to the state's (Nonnative) cies and hybrids natural resources. These regulations will serve to prevent Centaurea nigra black knapweed the continued introduction of these problem plants into Hydrilla verticillata hydrilla Washington. Centaurea nigrescens Vochin knapweed Hydrocharis morsus- European frog-bit Centaurea stoebe spotted knapweed ranae Chaenorrhinum minus dwarf snapdragon Impatiens glandulifera policeman’s helmet Clematis orientalis oriental clematis Isatis tinctoria dyers' woad It is prohibited to transport, buy, sell, offer for sale, or dis- Crassula helmsii Australian swamp stonecrop Kochia scoparia kochia, summer-cyprus, tribute plants or plant parts of the regulated species listed burning-bush, fireball, here into or within the state of Washington or to sell, offer Crupina vulgaris common crupina Mexican fireweed for sale, or distribute seed packets of seed, flower seed blends, or wildflower mixes of these regulated species Cyperus rotundus purple nutsedge Lagarosiphon major African elodea into or within the state of Washington. Cytisus scoparius scotch broom Lamiastrum galeobdolon yellow archangel Scientific Name Common Names Daucus carota wild carrot, Queen Anne's lace Abutilon theophrasti velvetleaf Leucanthemum vulgare oxeye daisy, white daisy, Echium vulgare blueweed, blue thistle, blue devil, whiteweed, field daisy, Alliaria petiolata garlic mustard viper's bugloss, snake flower marguerite, poorland flower Amorpha fruticosa indigobush, lead plant Egaria densa Brazilian elodea Linaria dalmatica spp. Dalmatian toadflax dalmatica Anchusa officinalis common bugloss, alkanet, Epilobium hirsutum hairy willow herb anchusa Euphorbia esula leafy spurge Ludwigia hexapetala water primrose Anthriscus sylvestris wild chervil Euphorbia oblongata eggleaf spurge Ludwigia peploides floating primrose-willow Arundo donax (except Giant reed Lysimachia vulgaris garden loosestrife variegated cultivars) Ficaria verna lesser celandine Lythrum salicaria purple loosestrife Brachypodium false brome Galega officinalis goatsrue sylvaticum Genista monspessulana French Broom Lythrum virgatum wand loosestrife Buddleja davidii; except butterfly bush sterile cultivars Geranium lucidum shiny geranium Marsilea mutica Australian water clover Butomus umbellatus flowering rush Glossostigma diandrum mud mat Mirabilis nyctaginea wild four o’clock, umbrella-wort Cabomba caroliniana fanwort Glyceria maxima reed sweetgrass, tall manna Murdannia keisak marsh dew flower, Asian grass Carduus acanthoides plumeless thistle spiderwort .