Image from PNW Weed ID Collection Image copyright information Thumbnail index - name begins with: [A-B]  [C]  [D-F]  [G-I]  [J-M]  [N-P]  [Q-R]  [S-T]  [U-Y]  < Previous . . . Next > PNW Weed ID Image Collection Listed alphabetically by Common Name Common Name Scientific Name Image American wintercress Barbarea orthoceras Flower Mature Annual bluegrass Poa annua Mature Seedling Annual sowthistle Sonchus oleraceus Mature Seedling Arrowgrass Triglochin maritima Flower Mature Barnyardgrass Echinochloa crus-galli Mature Seedling Bermudagrass Cynodon dactylon Flower Mature Big sagebrush Artemisia tridentata Leaf Mature Birdsrape mustard Brassica rapa Mature Seedling Bitter nightshade Solanum dulcamara Flower Mature Seedling Blackgrass Alopercuras myosuroides Flower Mature Black medic Medicago lupulina Seedling Black mustard Brassica nigra Mature Seedling Black nightshade Solanum nigrum Flower Mature Seedling Bladder campion Silene cucubalus Mature Seedling Blue mustard Chorispora tenella Mature Seedling Bouncingbet Saponaria officinalis Mature Seedling Bristly hawksbeard Crepis setosa Flower Mature Broadleaf dock Rumex obtusifolius Flower Mature Broadleaf plantain Plantago major Mature Seedling Brown knapweed Centaurea jacea Flower Mature Buckhorn plantain Plantago lanceolata Mature Seedling Buffalobur Solanum rostratum Mature Seedling Bulbous bluegrass Poa bulbosa Flower Mature Bullrush Scirpus spp Flower Mature Bull thistle Cirsium vulgare Mature Seedling Bur chervil Anthriscus scandicina Mature Seedling Bushy wallflower Erysimum repandum Mature Seedling California aster Aster chilensis Flower Mature California brome Bromus carinatus Mature Seedling California falsehellebore Veratrum californicum Mature California poppy Eschscholtzia californica Mature Seedling Canada goldenrod Solidago canadensis Mature Seedling Canada thistle Cirsium arvense Mature Seedling Caper spurge or mole plant Euphorbia lathyris Flower Mature Catchweed bedstraw Galium aparine Mature Seedling Cattail Typha latifolia Mature Seedling Celery-leaved lovage Ligusticum apiifolium Flower Mature Centaury Centaurium erythaea Flower Mature Cheat Bromus secalinus Mature Seedling Chicory Cichorium intybus Mature Seedling Chilean tarweed Madia sativa Flower Mature Cinquefoil Potentilla sp Mature Seedling Clasping pepperweed Lepidium perfoliatum Mature Seedling Coast fiddleneck Amsinckia intermedia Mature Seedling Cocklebur Xanthium strumarium Mature Seedling Colonial bentgrass Agrostis tenuis Flower Tuft Common anchusa Anchus officinalis Mature Seedling Common burdock Arctium minus Mature Seedling Common chickweed Stellaria media Mature Seedling Common groundsel Senecio vulgaris Mature Seedling Common lambsquarters Chenopodium album Mature Seedling Common mallow Malva neglecta Mature Seedling Common mullein Verbascum thapsus Mature Rosette Seedling Common purslane Portulaca oleracea Mature Seedling Common ragweed Ambrosia artemisiifolia Mature Seedling Common rye Secale cereale Flower Mature Common salsify Tragopogon porrifolius Flower Mature Common tansy Tanacetum vulgare Mature Seedling Common teasle Dipsacus sylvestris Flower Mature Seedling Common vetch Vicia sativa Leaf Mature Cone catchfly Silene conoidea Flower Seedling Corn cockle Agrostemma githago Mature Seedling Cornflower (Bachelor button) Centaurea cyanus Mature Seedling Corn gromwell Lithospermum arvense Flower Mature Seedling Corn spurry Spergula arvensis Flower Mature Creeping bellflower Campanula rapunculoides Mature Seedling Creeping bentgrass Agrostis stolonfera Flower Mature Creeping buttercup Ranunculus repens Mature Seedling Creeping speedwell Veronica filiformis Mature Creeping woodsorrel Oxalis corniculata Mature Seedling Curly dock Rumex crispus Mature Seedling Cutleaf nightshade Solanum triflorum Mature Seedling Dalmation toadflax Linaria dalmatica Mature Seedling Dandelion Taraxacum officinale Mature Seedling Death camas Zigadenus venenosus Flower Mature Desert saltgrass Distichlis stricta Mature Seedling Devils beggarticks Bidens frondosa Mature Seedling Diffuse knapweed Centaurea diffusa Mature Seedling Distaff thistle Carthamus lanatus Mature Seedling Dock leaved persicaria Polygonum lapathifolium Mature Dodder Cuscuta sp Mature Seedling Dogtail Cynosurus echinatus Flower Mature Douglas rabbitbrush Chrysothamnus viscidiflorus Leaf Mature Downy brome Bromus tectorum Mature Seedling Eastern fireweed Erechtites hieracifolia Mature Seedling English daisy Bellis perennis Mature Eschscholtzia californica California poppy Mature Seedling Evergreen blackberry Rubus laciniatus Flower Mature Everlasting peavine Lathyrus latifolius Flower Mature Eyebright Parentucellia viscosa Flower Mature Fall panicum Panicum dichotomilforum Flower Mature Field bindweed Convolvulus arvensis Mature Seedling Field horsetail Equisetum arvense Mature Seedling Field pennycress Thlaspi arvense Mature Seedling Field sandbur Cenchrus pauciflorus Mature Seedling Field violet Viola arvensis Flower Mature Fireweed Epilobium angustifolium Mature Seedling Flixweed Descurainia sophia Mature Seedling Foxglove Digitalis purpurea Mature Seedling Foxtail barley Hordeum jubatum Flower Mature Giant horsetail Equisetum telmateia Mature Seedling Giant ragweed Ambrosia trifida Seedling Globe thistle Echinops sphaerocephalus Mature Seedling Goosegrass Eleusine indica Flower Mature Gorse Ulex europaeus Mature Graceful spurge Euphorbia glomerifera Flower Mature Grass pea Lathyrus sphaericus Flower Mature Gray rabbitbrush Chrysothamnus nauseosus Flower Mature Green foxtail Setaria viridis Flower Mature Greesewood Sarcobutus vermiculatus Flower Mature Hairy cress Bromus commutatus Flower Mature Hairy golden aster Chrysopsis villosa Leaf Mature Hairy nightshade Solanum sarrachoides Mature Seedling Hairy vetch Vicia villosa Flower Mature Heal all or Self heal Prunella vulgaris Flower Mature Heartleaf drymary Drymaria cordata Leaf Mature Hedge bindweed Convolvulus sepium Flower Mature Hedge mustard Sisymbrium officinale Flower Mature Henbit Lamium amplexicaule Mature Seedling Hilo grass Paspalum conjugatum Mature Himalaya blackberry Rubus procerus Flower Mature Hoary cress (Whitetop) Cardaria draba Mature Seedling Horehound Marrubium vulgare Mature Seedling Horseweed Conyza canadensis Mature Seedling Houndstongue Cynoglossum officinale Mature Seedling Italian ryegrass Lolium multiflorum Flower Mature Italian thistle Carduus pycnocephalus Mature Seedling Ivyleaf speedwell Veronica hederaefolia Mature Seedling Japanese brome Bromus japonicus Mature Seedling Japanese knotweed Polygonum cuspidatum Flower Mature Jimsonweed Datura stramonium Mature Seedling Johnsongrass Sorghum halepense Flower Mature Jointed goatgrass Aegilops cylindrica Mature Seedling Kentucky bluegrass Poa pratensis Mature Kochia Kochia scoparia Mature Seedling Ladysthumb-Smartweed Polygonum persicaria Mature Seedling Lambert crazyweed Oxytropis lambertii Mature Large crabgrass Digitaria sanguinalis Mature Seedling Large leaf lupine Lupinus polyphyllus Leaf Leafy spurge Euphorbia esula Mature Seedling Lesser snapdragon Antirrhinum orontium Mature Seedling Little bittercress Cardamine oligosperme Mature Seedling Little mallow Malva parviflora Mature Longleaf groundcherry Physalis longifolia Mature Seedling Longspine sandbur Cenchrus longispinus Mature Seedling Lovegrass Eragrostis pectinacea Mature Low larkspur Delphinium nuttallianum Mature Lupine Lupinus spp Mature Seedling Marijuana Cannabis sativa Seedling Mayweed chamomile Anthemis cotula Mature Seedling Meadow camas (Large camas) Camassia leichtlinii Flower Mature Meadow deathcamus Zigadenus venensus Flower Mature Meadow foxtail Alopercuras pratensis Flower Tuft Mediterranean sage Salvia aethiopis Mature Seedling Medusahead Taeniatherum caput-medusae Flower Mature Mexicantea Chenopodium ambrosioides Leaf Mature Mexican whorled milkweed Asclepias fascicularis Mature Seedling Milk thistle Silybum marianum Mature Seedling Miner's lettuce Montia perfoliata Mature Seedling Moth mullein Verbascum blattaria Flower Rosette Seedling Mousear chickweed Cerastium vulgatum Mature Seedling Musk thistle Carduus nutans Mature Seedling Narrow-leaf mule's ear Wyethia angustifolia Flower Mature Natal redtop Tricholaena repens Mature Nelson's checker-mallow Sidalcea nelsoniana Flower Mature Nipplewort Lapsana communis Flower Mature Orchardgrass Dactylis glomerata Flower Mature Orcutt's lovegrass Ergrostis orcuttiane Flower Mature Oxeye daisy Chrysanthemum leucanthemum Mature Seedling Pacific poison oak Rhus diversiloba Leaf Mature Perennial ryegrass Lolium perenne Mature Seedling Perennial sowthistle Sonchus arvensis Mature Seedling Persian speedwell Veronica Persica Mature Pineappleweed Matricaria matricarioides Mature Seedling Pinnate poppy Papaver argemone Mature Seedling Pinnate tansymustard Descurainia pinnata Mature Seedling Poison hemlock Conium maculatum Mature Seedling Portuguese broom Cytisus striatus Flower Mature Powell amaranth Amaranthus powellii Flower Mature Prickly lettuce Lactuca serriola Mature Seedling Prostrate knotweed Polygonum aviculare Mature Seedling Prostrate pigweed Amaranthus blitoides Mature Seedling Puncturevine Tribulus terrestris Mature Seedling Purple deadnettle Lamium purpureum Flower Mature Purple loosestrife Lythrum salicaria Mature Seedling Purple nutsedge Cyperus rotundus Mature Purple starthistle Centaurea calcitrapa Flower Mature Seedling Purslane speedwell Veronica peregrina Flower Mature Quackgrass Elytrigia repens Mature Seedling Rattail fescue Vulpia myuros Flower Mature Red elderberry Sambucus callicarpa Flower Mature Redmaids Calandrinia ciliata Flower Mature Red orach Atriplex rosea Mature Seedling Redroot pigwweed Amaranthus retroflexus Flower Seedling Red sorrel Rumex acetosella Mature Seedling Redstem filaree Erodium cicutarium Mature Seedling Reed canarygrass Phalaris arundinacea Flower Mature Rescuegrass Bromus catharticus Flower Mature Ripgut brome Bromus rigidius Flower Seedling Rocky Mountain beeplant Cleome serrulata Mature Rough hawkbit Leontodon nudicaulis Mature Seedling Roughstalk bluegrass Poa trivialis Mature Rush skeletonweed Chondrilla juncea Flower Rosette Seedling Russian knapweed Centaurea repens Mature Seedling Russian thistle Salsola iberica Mature Seedling Sand spurry Spergularia rubra Flower Mature Scarlet pimpernel Anagallis arvensis Flower Mature Scotch broom Cytisus scoparius Flower Mature Scotch thistle Onopordum acanthium Mature Seedling Scouring rush Equisetum hyemale Flower Mature Sharppoint fluvellin Kickxia elatine Mature Seedling Shepherdspurse Capsella bursa-pastoris Mature Seedling Showy milkweed Asclepias speciosa Mature Seedling Silky crazyweed Oxytropis sericea Mature Skunk cabbage Lysichitum americanum Flower Skunkweed Gilia Navarretia squarrosa Flower Mature Slenderflower thistle Carduus tenuiflorus Mature Seedling Smallseed falseflax Camelina microcarpa Mature Seedling Smooth brome Bromus inermis Leaf Seedling Smooth hawksbeard Crepis capillaris Flower Mature Soft brome Bromus mollis Mature Seedling Spiny amaranth Amaranthus spinosus Mature Seedling Spiny cocklebur Xanthium spinosum Mature Seedling Spiny sowthistle Sonchus asper Mature Seedling Spotted catsear Hypochaeris radicata Mature Seedling Spotted knapweed Centaurea maculosa Mature Seedling Spotted spurge Euphorbia maculata Seedling Spreading dogbane Apocynum androsaemifolium Flower Mature Squarrose knapweed Centaurea squarrosa Flower Seedling Sticky chickweed Cerastium viscosum Mature Seedling Stinging nettle Urtica dioica Mature Seedling Stinkgrass Eragrostis megastachya Flower Mature St Johnswort Hypericum perforatum Leaf Mature Swainsonpea Sphaerophysa salsula Mature Seedling Sword fern Polystichum sp Mature Seedling Tall larkspur Delphinium barbeyi Mature Tansy ragwort Senecio jacobaea Mature Seedling Testiculate buttercup Ranuculus testiculatus Mature Seedling Trailing blackberry Rubus vitifolius Leaf Mature Tuber oatgrass Arrhenatherum elatius var bulbosum Mature Rosette Tumble mustard Sisymbrium altissimum Mature Seedling Tumble pigweed Amaranthus albus Mature Seedling Turkey mullein Eremocarpus setigerus Flower Mature Utah thistle Cirsium utahense Mature Velvetleaf Abutilon theophrasti Mature Seedling Water foxtail Alopercuras geniculatus Flower Mature Waterhyacinth Eichornia crassipes Flower Mature Watson's willow-herb Epilobium watsonii Leaf Mature Wavey leaf thistle Cirsium undulatum Seedling Weeping lovegrass Eragrostis curvula Mature Western bracken fern Pteridium aquilinum Mature Seedling Western goldenrod Solidago occidentalis Flower Mature Western salsify Tragopogon dubius Flower Mature Western water hemlock Cicuta douglasii Mature Seedling Tissue Western wild cucumber Marah oreganus Mature Rosette White sweetclover Melilotus alba Flower Mature Wild buckwheat Polygonum convolvulus Mature Seedling Wild carrot Daucus carota Mature Seedling Wild garlic Allium vineale Flower Mature Wild iris Iris sp Flower Mature Wild mustard Brassica kaber Flower Mature Seedling Wild oat Avena fatua Mature Seedling Wild onion Allium accuminatum Flower Seedling Wild proso millet Panicum miliaceum Mature Seedling Wild radish Raphanus sativus Flower Mature Witchgrass Panicum capillare Mature Seedling Woodland groundsel Senecio sylvaticus Mature Rosette Yarrow Achillea millefolium Mature Seedling Yellow foxtail Setaria glauca Mature Seedling Yellow nutsedge Cyperus esculentus Mature Seedling Yellow starthistle Centaurea solstitialis Mature Seedling Yellow sweetclover Melilotus officinalis Flower Mature Yellow toadflax Linaria vulgaris Mature Seedling Yellow woodsorrel Oxalis stricta Flower Mature < Previous . . . Next >