Weed Photo Gallery

Select a photo below to view associated weed fact sheet.

Weeds: Annual bluegrass – Poa annua

Weeds: Barnyardgrass – Echinochloa crus-galli

Weeds: Bentgrass, creeping – Agrostis stolonifera

Weeds: Bermudagrass – Cynodon dactylon

Weeds: Birdfoot Trefoil – Lotus corniculatus

Weeds: Bittercress (Shotweed, Hairy bittercress) – Cardamine hirsuta

Weeds: Bittersweet nightshade (European bittersweet) – Solanum dulcamara

Weeds: Black medic – Medicago lupulina

Weeds: Blackberry (Himalayan, Evergreen, Pacific) – Rubus spp.

Weeds: Blue mustard (Purple mustard, Tenella mustard) – Chorispora tenella

Weeds: Brackenfern, western – Pteridium aquilinum

Weeds: Buffalobur – Solanum rostratum

Weeds: Bull thistle – Cirsium vulgare

Weeds: Buttercup, creeping – Ranunculus repens

Weeds: Butterfly bush – Buddleja davidii

Weeds: Canada thistle – Cirsium arvense

Weeds: Catchweed bedstraw (Cleavers) – Galium aparine

Weeds: Catsear, common (False dandelion) – Hypochaeris radicata

Weeds: Chickweed, common and mouseear – Stellaria media, Cerastium fontanum ssp. vulgare

Weeds: Clover – Trifolium spp.

Weeds: Comfrey – Symphytum officinale

Weeds: Crabgrass – Digitaria spp.

Weeds: Creeping Jenny: Lysimachia nummularia

Weeds: Dandelion – Taraxacum officinale

Weeds: Dock (Curly, Broadleaf) – Rumex spp.

Weeds: Dodder – Cuscuta spp.

Weeds: Downy brome (Cheatgrass, Downy chess) – Bromus tectorum

Weeds: Dwarf mistletoes – Arceuthobium spp.

Weeds: English daisy (Lawn daisy) – Bellis perennis

Weeds: English ivy – Hedera helix

Weeds: Field bindweed (Wild morningglory) – Convolvulus arvensis

Weeds: Field pennycress (Fanweed) – Thlaspi arvense

Weeds: Flixweed – Descurainia sophia

Weeds: Foxtail (Green, Yellow, Bristly) – Setaria spp.

Weeds: Garden loosestrife – Lysimachia vulgaris

Weeds: Giant hogweed – Heracleum mantegazzianum

Weeds: Goldenrods – Solidago spp.

Weeds: Ground ivy – Glechoma hederacea

Weeds: Groundsel, common – Senecio vulgaris

Weeds: Hawkweeds – Hieracium spp.

Weeds: Hedge bindweed – Calystegia sepium (Convolvulus sepium)

Weeds: Henbit – Lamium amplexicaule

Weeds: Herb Robert (Robert geranium, stinky Bob) – Geranium robertianum

Weeds: Horsetails (Scouringrush) – Equisetum spp.

Weeds: Horseweed (Marestail) – Conyza canadensis

Weeds: Knapweeds – Centaurea spp.

Weeds: Knotweeds (Bohemian, Giant, Japanese, Himalayan) – Polygonum spp.

Weeds: Kochia – Kochia scoparia

Weeds: Lambsquarters, common – Chenopodium album

Weeds: Lesser celandine – Ficaria verna

Weeds: Liverworts – Several species

Weeds: Mallow, common (Cheeseweed, Buttonweed) – Malva neglecta

Weeds: Nightshades – Solanum spp.

Weeds: Oxalis (Creeping woodsorrel) – Oxalis corniculata

Weeds: Parrotfeather and Eurasian watermilfoil – Myriophyllum spp.

Weeds: Pineappleweed – Matricaria discoidea

Weeds: Plantain (Broadleaf, Buckhorn) – Plantago spp.

Weeds: Poison hemlock – Conium maculatum

Weeds: Poison ivy and Poison oak – Toxicodendron spp. (Rhus spp.)

Weeds: Pokeweed: Phytolacca americana

Weeds: Prickly lettuce (China lettuce) – Lactuca serriola

Weeds: Prostrate knotweed – Polygonum aviculare

Weeds: Puncturevine (Tackweed, Goathead) – Tribulus terrestris

Weeds: Purple deadnettle (Red deadnettle) – Lamium purpureum

Weeds: Purple loosestrife (Purple lythrum) – Lythrum salicaria

Weeds: Purslane, common – Portulaca oleracea

Weeds: Quackgrass – Elymus repens (Elytrigia repens, Agropyron repens)

Weeds: Red sorrel (Sheep sorrel) – Rumex acetosella

Weeds: Redroot pigweed (Rough pigweed) – Amaranthus retroflexus

Weeds: Redstem filaree (Stork’s bill, Crane’s bill) – Erodium cicutarium

Weeds: Reed canarygrass – Phalaris arundinacea

Weeds: Russian thistle (Tumbleweed) – Salsola tragus (S. iberica, S. kali)

Weeds: Ryegrass, annual (Italian ryegrass) – Lolium perenne ssp. multiflorum

Weeds: Salsify (Goatsbeard) – Tragopogon spp.

Weeds: Scotch broom – Cytisus scoparius

Weeds: Shepherd’s-purse – Capsella bursa-pastoris

Weeds: Smartweeds – Polygonum spp.

Weeds: Sowthistle, annual and perennial – Sonchus oleraceus, Sonchus arvensis

Weeds: Speedwells – Veronica spp.

Weeds: Spurges (Prostrate spurges) – Chamaesyce spp. (Euphorbia spp.)

Weeds: Stinging nettle – Urtica dioica

Weeds: St. Johnswort, common (Goatweed, Klamathweed) – Hypericum perforatum

Weeds: Tansy ragwort – Senecio jacobaea

Weeds: Tumblemustard (Jim Hill mustard) – Sisymbrium altissimum

Weeds: Velvetgrass (Common velvetgrass) – Holcus lanatus

Weeds: Velvetleaf – Abutilon theophrasti

Weeds: Water primrose – Ludwigia uruguayensis (L. hexapetala)

Weeds: Waterhemlock, western – Cicuta douglasii

Weeds: Wild carrot (Queen Anne’s lace) – Daucus carota

Weeds: Yellow nutsedge – Cyperus esculentus