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UC Cooperative Extension Ventura County
669 County Square Dr. Suite 100
Ventura CA 93003
Phone: 805.645.1451
Fax: 805.645.1474

Office Hours
Our offices are currently closed due to the COVID-19 pandemic, and our team is telecommuting from home. We are available via phone and email. 

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Alphabetical List by Scientific Name

 

Q
W
Y
Z

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A

Acroptilon repens (Russian Knapweed)
Ailanthus altissima (Tree-of-Heaven)
Allium neapolitanum (Ornamental Onion)
Amaranthus albus (Tumble Pigweed)
Amaranthus retroflexus (Redroot Pigweed)
Ambrosia psilostachya (Western Ragweed)
Anagallis arvensis (Scarlet Pimpernel)
Anthemis cotula (Mayweed)
Araujia sericifera (Bladderflower)
Arctium lappa (Common Burdock)
Arundo donax (Giant Reed)
Atriplex semibaccata (Australian Saltbush)
Avena fatua (Wild Oats)

B

Brassica nigra (Black Mustard)
Brassica rapa (Field Mustard)
Bromus arizonicus (Arizona Brome)
Bromus catharticus (Rescuegrass)
Bromus diandrus (Ripgut Brome)
Bromus hordeaceus (Soft Chess)
Bromus madritensis (Red Brome)
Bromus tectorum (Downy Brome, Cheat Grass)

C

Capsella bursa-pastoris (Shepherdspurse)
Carduus pycnocephalus (Italian Thistle)
Carpobrotus edulis (Hottentot Fig)
Cenchrus longispinus (Longspine Sandbur)
Centaurea melitensis (Tocalote)
Centaurea solstitialis (Yellow Starthistle)
Centranthus ruber (Red Valerian)
Cerastium glomeratum (Sticky Chickweed)
Chamaesyce maculata (Prostrate Spurge)
Chamaesyce serpens (Creeping Spurge)
Chenopodium album (Common Lambsquarters)
Chenopodium murale (Nettleleaf Goosefoot)
Chloris virgata (Feather Fingergrass)
Chrysanthemum coronarium (Garland Chrysanthemum)
Cichorium intybus (Chicory)
Cirsium arvense (Canada Thistle)
Cirsium vulgare (Bull Thistle)
Conium maculatum (Poison Hemlock)
Convolvulus arvensis (Field Bindweed)
Conyza bonariensis (Flax-leaved Fleabane)
Conyza canadensis (Canada Horseweed)
Cortaderia jubata (Pampas Grass)
Cotula australis (Southern Brassbuttons)
Croton setigerus (Turkey Mullein)
Cuscuta indecora (Largeseed Dodder)
Cynodon dactylon (Bermudagrass)
Cyperus esculentus (Yellow Nutsedge)
Cyperus rotundus (Purple Nutsedge)

D

Dactylis glomerata (Orchardgrass)
Datura stramonium (Jimsonweed)
Datura wrightii (Tolguacha)
Delairea odorata (Cape Ivy)
Digitaria sanguinalis (Large Crabgrass)

E

Echinochloa colonum (Jungle Rice)
Echinochloa_crusgalli (Barnyardgrass)
Ehrharta calycina (Veldt Grass)
Elytrigia repens (Quack Grass)
Epilobium brachycarpum Panicle Willowweed)
Eragrostis cilianensis (Stink Grass)
Eragrostis pectinacea (Love Grass)
Erodium botrys (Broadleaf Filaree)
Erodium cicutarium (Redstem Filaree)
Erodium moschatum (Whitestem Filaree)
Euphorbia peplus (Petty Spurge)

F

Festuca arundinacea (Tall Fescue)
Foeniculum vulgare (Common Fennel)

G

Genista monspessulana (French Broom)

H

Hedera helix (English Ivy)
Hirschfeldia incana (Wild Mustard)
Holcus lanatus (Velvetgrass)
Hordeum murinum (Hare Barley)
Hypericum perforatum (Common St. Johnswort)
Hypochaeris radicata (Spotted Catsear)

K

Kickxia elatine (Fluvellin Fluellin)
Kochia scoparia (Kochia)

L

Lactuca serriola (Prickly Lettuce)
Lamium amplexicaule (Henbit)
Lathyrus latifolius (Everlasting Peavine)
Leptochloa fascicularis (Bearded Sprangletop)
Leptochloa uninervia (Mexican Sprangletop)
Lolium multiflorum (Italian Ryegrass)
Lolium perenne (Perennial Ryegrass)

M

Malva parviflora (Little Mallow)
Marrubium vulgare (Horehound)
Matricaria matricarioides (Pineappleweed)
Medicago polymorpha (California Burclover)
Melilotus albus (White Sweetclover)
Melilotus indicus (Annual Yellow Sweetclover)
Melilotus officinalis (Yellow Sweetclover)

N

Nicotiana glauca (Tree Tobacco)
Nothoscordum inodorum (False Garlic)

O

Oenothera elata (Hooker's Eveningprimrose)
Oxalis corniculata (Creeping Woodsorrel)
Oxalis pes-caprae (Buttercup Oxalis)

P

Panicum capillare (Witchgrass)
Paspalum dilatatum (Dallisgrass)
Pennisetum clandestinum (Kikuyugrass)
Pennisetum setaceum (Crimson Fountaingrass)
Pennisetum villosum (Feathertop)
Phalaris aquatica (Hardinggrass)
Phalaris minor (Littleseed Canarygrass)
Phoradendron macrophyllum (Big Leaf Mistletoe)
Phytolacca americana (Common Pokeweed)
Piptatherum miliaceum (Smilograss)
Plantago lanceolata (Buckhorn Plantain)
Plantago major (Broadleaf Plantain)
Poa annua (Annual Bluegrass)
Poa bulbosa (Bulbous Bluegrass)
Polygonum amphibium (Swamp Smartweed)
Polygonum arenastrum (Prostrate Knotweed)
Polypogon monspeliensis (Rabbitfoot Polypogon)
Portulaca oleracea (Common Purslane)

R

Raphanus raphanistrum (Wild Radish)
Raphanus sativus (Wild Radish)
Ricinus communis (Castor Bean)
Rubus discolor (Himalaya Blackberry)
Rumex acetosella (Red Sorrel)
Rumex crispus (Curly Dock)

S

Salsola tragus (Russian Thistle)
Senecio vulgaris (Common Groundsel)
Setaria geniculata (Knotroot Foxtail)
Setaria pumila (Yellow Foxtail)
Silybum marianum (Milk Thistle)
Sisymbrium altissimum (Tumbling Mustard)
Sisymbrium irio (London Rocket)
Sisymbrium officinale (Hedge Mustard)
Sisymbrium orientale (Oriental Mustard)
Solanum carolinense (Horsenettle)
Solanum nigrum (Black Nightshade)
Solanum rostratum (Buffalobur)
Solanum sarrachoides (Hairy Nightshade)
Sonchus asper (Prickly Sowthistle)
Sonchus oleraceus (Annual Sowthistle)
Sorghum halepense (Johnsongrass)
Spartium junceum (Spanish Broom)
Stellaria media (Common Chickweed)

T

Tamarix ramosissima (Salt Cedar)
Taraxacum officinale (Dandelion)
Toxicodendron diversilobum (Pacific Poison Oak)
Tragopogon porrifolius (Common Salsify)
Tribulus terrestris (Puncture Vine)
Trifolium repens (White Clover)
Typha latifolia (Common Cattail)

U

Urtica dioica (California Slender Nettle)
Urtica urens (Burning Nettle)

V

Verbascum thapsus (Common Mullein)
Verbascum virgatum (Virgate Mullein)
Veronica anagallis-aquatica (Water Speedwell)
Veronica persica (Persian Speedwell)
Vicia sativa (Common Vetch)
Vinca major (Periwinkle)
Vulpia myuros (Rattail Fescue)

X

Xanthium strumarium (Cocklebur)