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UC IPM Home >
Weed Gallery > Weeds by Category
How to Manage Pests
Identification: Weed Photo Gallery, All Categories
The UC IPM Weed Photo Gallery includes many,
but not all, weed species commonly found in California farms and landscapes.
Additional species will be added over time.
Click on table headings to sort columns1. Tip: Sort multiple columns
simultaneously by holding down the shift key and clicking a second, third
or even fourth column header.
| Common Name |
Scientific Name |
Family |
Category |
Broadleaves
| Amaranth, Low |
Amaranthus deflexus |
Amaranthaceae (Pigweed Family) |
Broadleaf |
| Bassia,
Fivehook |
Bassia hyssopifolia |
Chenopodiaceae (Goosefoot Family) |
Broadleaf |
| Bindweed, Field |
Convolvulus arvensis |
Convolvulaceae (Morningglory Family) |
Broadleaf |
| Bittercress, Little |
Cardamine oligosperma |
Brassicaceae (Mustard Family) |
Broadleaf |
| Blackberries, Wild |
Rubus spp. |
Rosaceae (Rose Family) |
Broadleaf |
| Brassbuttons,
Southern |
Cotula australis |
Asteraceae (Sunflower Family) |
Broadleaf |
| Broomrape, Branched |
Orobanche ramosa |
Orobanchaceae (Broomrape Family) |
Broadleaf |
| Buckwheat, Wild |
Polygonum convolvulus |
Polygonaceae (Buckwheat Family) |
Broadleaf |
| Burclover, California |
Medicago polymorpha |
Fabaceae (Pea or Bean Family) |
Broadleaf |
| Burweed, Lawn |
Soliva sessilis |
Asteraceae (Sunflower Family) |
Broadleaf |
| Catsear, Common |
Hypochaeris radicata |
Asteraceae (Sunflower Family) |
Broadleaf |
| Chamomile, Mayweed |
Anthemis cotula |
Asteraceae (Sunflower Family) |
Broadleaf |
| Chickweed, Common |
Stellaria media |
Caryophyllaceae (Pink Family) |
Broadleaf |
| Chickweed, Mouseear |
Cerastium fontanum ssp. vulgare |
Caryophyllaceae (Pink Family) |
Broadleaf |
| Clover, Strawberry |
Trifolium fragiferum |
Fabaceae (Pea or Bean Family) |
Broadleaf |
| Clover, White |
Trifolium repens |
Fabaceae (Pea or Bean Family) |
Broadleaf |
| Cocklebur, Common |
Xanthium strumarium |
Asteraceae (Sunflower Family) |
Broadleaf |
| Cudweed, Purple |
Gnaphalium purpureum |
Asteraceae (Sunflower Family) |
Broadleaf |
| Cudweeds |
Gnaphalium spp. |
Asteraceae (Sunflower Family) |
Broadleaf |
| Daisy,
English |
Bellis perennis |
Asteraceae (Sunflower Family) |
Broadleaf |
| Dandelion |
Taraxacum officinale |
Asteraceae (Sunflower Family) |
Broadleaf |
| Dichondra, Kidney- weed |
Dichondra repens |
Convolvulaceae (Morningglory Family) |
Broadleaf |
| Dock, Curly |
Rumex crispus |
Polygonaceae (Buckwheat Family) |
Broadleaf |
| Dodder |
Cuscuta spp. |
Convolvulaceae (Morningglory Family) |
Broadleaf |
| Fiddlenecks |
Amsinckia spp. |
Boraginaceae (Borage Family) |
Broadleaf |
| Filaree, Whitestem |
Erodium moschatum |
Geraniaceae (Geranium Family) |
Broadleaf |
| Filarees |
Erodium spp. |
Geraniaceae (Geranium Family) |
Broadleaf |
| Fleabane, Hairy |
Conyza bonariensis |
Asteraceae (Sunflower Family) |
Broadleaf |
| Flixweed |
Descurainia sophia |
Brassicaceae (Mustard Family) |
Broadleaf |
| Fluvellins |
Kickxia spuria, K. elatine |
Scrophulariaceae (Figwort Family) |
Broadleaf |
| Geranium, Cutleaf |
Geranium dissectum |
Geraniaceae (Geranium Family) |
Broadleaf |
| Goosefoot,
Nettleleaf |
Chenopodium murale |
Chenopodiaceae (Goosefoot Family) |
Broadleaf |
| Groundcherries |
Physalis spp. |
Solanaceae (Nightshade Family) |
Broadleaf |
| Groundsel, Common |
Senecio vulgaris |
Asteraceae (Sunflower Family) |
Broadleaf |
| Healall |
Prunella vulgaris var. vulgaris |
Lamiaceae (Mint Family) |
Broadleaf |
| Hemlock,
Poison |
Conium maculatum |
Apiaceae (Carrot Family) |
Broadleaf |
| Henbit |
Lamium amplexicaule |
Lamiaceae (Mint Family) |
Broadleaf |
| Horseweed |
Conyza canadensis |
Lamiaceae (Mint Family) |
Broadleaf |
| Jimsonweed |
Datura stramonium |
Solanaceae (Nightshade Family) |
Broadleaf |
| Knapweed, Russian |
Acroptilon repens |
Asteraceae (Sunflower Family) |
Broadleaf |
| Knotweed, Common |
Polygonum arenastrum |
Polygonaceae (Buckwheat Family) |
Broadleaf |
| Kochia |
Kochia scoparia |
Chenopodiaceae (Goosefoot Family) |
Broadleaf |
| Ladysthumb |
Polygonum persicaria |
Chenopodiaceae (Goosefoot Family) |
Broadleaf |
| Lambsquarters, Common |
Chenopodium album |
Chenopodiaceae (Goosefoot Family) |
Broadleaf |
| Lettuce, Prickly |
Lactuca serriola |
Asteraceae (Sunflower Family) |
Broadleaf |
| Lettuce, Miner's |
Claytonia perfoliata |
Portulacaceae (Purslane Family) |
Broadleaf |
| Madder, Field |
Sherardia arvensis |
Rubiaceae (Madder Family) |
Broadleaf |
| Mallow, Bristly |
Modiola caroliniana |
Malvaceae (Mallow Family) |
Broadleaf |
| Mallow,
Little |
Malva parviflora |
Malvaceae (Mallow Family) |
Broadleaf |
| Medic, Black |
Medicago lupulina |
Fabaceae (Pea or Bean Family) |
Broadleaf |
| Milkthistle, Blessed |
Silybum marianum |
Asteraceae (Sunflower Family) |
Broadleaf |
| Mistletoes |
Phoradendron spp. |
Viscaceae (Mistletoe Family) |
Broadleaf |
| Morningglories |
Ipomoea spp. |
Convolvulaceae (Morningglory Family) |
Broadleaf |
| Mullein, Turkey |
Croton setigerus |
Euphorbiaceae (Spurge Family) |
Broadleaf |
| Mustard, Tumble |
Sisymbrium altissimum |
Brassicaceae (Mustard Family) |
Broadleaf |
| Mustards |
Brassica spp. |
Brassicaceae (Mustard Family) |
Broadleaf |
| Nettle, Burning |
Urtica urens |
Urticaceae (Nettle Family) |
Broadleaf |
| Nightshade, Black |
Solanum nigrum |
Solanaceae (Nightshade Family) |
Broadleaf |
| Nightshade, Hairy |
Solanum physalifolium |
Solanaceae (Nightshade Family) |
Broadleaf |
| Nightshade, Silverleaf |
Solanum elaeagnifolium |
Solanaceae (Nightshade Family) |
Broadleaf |
| Oxalis,
Buttercup |
Oxalis pes-caprae |
Oxalidaceae (Oxalis Family) |
Broadleaf |
| Oxtongue, Bristly |
Picris echioides |
Asteraceae (Sunflower Family) |
Broadleaf |
| Pearlwort,
Birdseye |
Sagina procumbens |
Caryophyllaceae (Pink Family) |
Broadleaf |
| Pennywort |
Hydrocotyle sp. |
Apiaceae (Carrot Family) |
Broadleaf |
| Pigweed, Redroot |
Amaranthus retroflexus |
Amaranthaceae (Pigweed Family) |
Broadleaf |
| Pigweeds |
Amaranthus spp. |
Amaranthaceae (Pigweed Family) |
Broadleaf |
| Pimpernel, Scarlet |
Anagallis arvensis |
Primulaceae (Primrose Family) |
Broadleaf |
| Pineapple-weed |
Chamomilla suaveolens |
Asteraceae (Sunflower Family) |
Broadleaf |
| Plantain, Broadleaf |
Plantago major |
Plantaginaceae (Plantain Family) |
Broadleaf |
| Plantain, Buckhorn |
Plantago lanceolata |
Plantaginaceae (Plantain Family) |
Broadleaf |
| Poison-oak, Pacific |
Toxicodendron diversilobum |
Anacardiaceae (Sumac Family) |
Broadleaf |
| Puncturevine |
Tribulus terrestris |
Zygophyllaceae (Caltrop Family) |
Broadleaf |
| Purslane, Common |
Portulaca oleracea |
Portulacaceae (Purslane Family) |
Broadleaf |
| Radish,
Wild |
Raphanus raphanistrum |
Brassicaceae (Mustard Family) |
Broadleaf |
| Redmaids |
Calandrinia ciliata |
Portulacaceae (Purslane Family) |
Broadleaf |
| Redstems |
Ammannia spp. |
Lythraceae (Loosestrife Family) |
Broadleaf |
| Rocket, London |
Sisymbrium irio |
Brassicaceae (Mustard Family) |
Broadleaf |
| Ryegrass, Italian |
Lolium multiflorum |
Poaceae (Grass Family) |
Broadleaf |
| Ryegrasses |
Lolium spp. |
Poaceae (Grass Family) |
Broadleaf |
| Salsify,
Common |
Tragopogon porrifolius |
Asteraceae (Sunflower Family) |
Broadleaf |
| Shepherd's-purse |
Capsella bursa-pastoris |
Brassicaceae (Mustard Family) |
Broadleaf |
| Smartweed, Pale |
Polygonum lapathifolium |
Polygonaceae (Buckwheat Family) |
Broadleaf |
| Sorrel, red |
Rumex acetosella |
Polygonaceae (Buckwheat Family) |
Broadleaf |
| Sowthistle, Annual |
Sonchus oleraceus |
Asteraceae (Sunflower Family) |
Broadleaf |
| Sowthistles |
Sonchus spp. |
Asteraceae (Sunflower Family) |
Broadleaf |
| Speedwell, Persian |
Veronica persica |
Scrophulariaceae (Figwort Family) |
Broadleaf |
| Speedwell,
thymeleaf |
Veronica serpyllifolia |
Scrophulariaceae (Figwort Family) |
Broadleaf |
| Spurge, Creeping |
Euphorbia serpens |
Euphorbiaceae (Spurge Family) |
Broadleaf |
| Spurge, Petty |
Euphorbia peplus |
Euphorbiaceae (Spurge Family) |
Broadleaf |
| Spurge, Spotted |
Euphorbia maculata |
Euphorbiaceae (Spurge Family) |
Broadleaf |
| Spurry, Corn |
Spergula arvensis |
Caryophyllaceae (Pink Family) |
Broadleaf |
| Starthistle, Yellow |
Centaurea solstitialis |
Asteraceae (Sunflower Family) |
Broadleaf |
| Stickleaf |
Mentzelia dispersa |
Loasaceae (Loasa Family) |
Broadleaf |
| Sunflowers |
Helianthus spp. |
Asteraceae (Sunflower Family) |
Broadleaf |
| Sweetclover, Yellow |
Melilotus officinalis |
Fabaceae (Pea or Bean Family) |
Broadleaf |
| Swinecress, Lesser |
Coronopus didymus |
Brassicaceae (Mustard Family) |
Broadleaf |
| Tarweeds |
Hemizonia spp. |
Asteraceae (Sunflower Family) |
Broadleaf |
| thistle, Canada |
Cirsium arvense |
Asteraceae (Sunflower Family) |
Broadleaf |
| thistle, Russian |
Salsola tragus |
Chenopodiaceae (Goosefoot Family) |
Broadleaf |
| Thornapple, Sacred |
Datura wrightii |
Solanaceae (Nightshade Family) |
Broadleaf |
| Velvetleaf |
Abutilon theophrasti |
Malvaceae (Mallow Family) |
Broadleaf |
| Wild Cucumber |
Marah spp. |
Cucurbitaceae (Squash Family) |
Broadleaf |
| Willowherbs |
Epilobium spp. |
Onagraceae (Evening Primrose Family) |
Broadleaf |
| Woodsorrel, Creeping |
Oxalis corniculata |
Oxalidaceae (Oxalis Family) |
Broadleaf |
| Yarrow,
Common |
Achillea millefolium |
Asteraceae (Sunflower Family) |
Broadleaf |
| Common Name |
Scientific Name |
Family |
Category |
Grasses—Top of page
| Barley,
Foxtail |
Hordeum jubatum |
Poaceae (Grass Family) |
Grass |
| Barley,
Hare |
Hordeum murinum ssp. leporinum |
Poaceae (Grass Family) |
Grass |
| Barnyardgrass |
Echinochloa crus-galli |
Poaceae (Grass Family) |
Grass |
| Bentgrasses |
Agrostis spp. |
Poaceae (Grass Family) |
Grass |
| Bermudagrass |
Cynodon dactylon |
Poaceae (Grass Family) |
Grass |
| Bluegrass, Annual |
Poa annua |
Poaceae (Grass Family) |
Grass |
| Brome, Ripgut |
Bromus diandrus |
Poaceae (Grass Family) |
Grass |
| Brome, Soft |
Bromus hordeaceus |
Poaceae (Grass Family) |
Grass |
| Canarygrass,
Littleseed |
Phalaris minor |
Poaceae (Grass Family) |
Grass |
| Crabgrasses |
Digitaria spp. |
Poaceae (Grass Family) |
Grass |
| Crabgrass, Large |
Digitaria sanguinalis |
Poaceae (Grass Family) |
Grass |
| Crabgrass, Smooth |
Digitaria ischaemum |
Poaceae (Grass Family) |
Grass |
| Cupgrass, Southwestern |
Eriochloa acuminata |
Poaceae (Grass Family) |
Grass |
| Cupgrass, Prairie |
Eriochloa contracta |
Poaceae (Grass Family) |
Grass |
| Dallisgrass |
Paspalum dilatatum |
Poaceae (Grass Family) |
Grass |
| Fescue,
Tall |
Festuca arundinacea |
Poaceae (Grass Family) |
Grass |
| Foxtail, Yellow |
Setaria pumila |
Poaceae (Grass Family) |
Grass |
| Foxtails |
Setaria spp. |
Poaceae (Grass Family) |
Grass |
| Goosegrass |
Eleusine indica |
Poaceae (Grass Family) |
Grass |
| Johnsongrass |
Sorghum halepense |
Poaceae (Grass Family) |
Grass |
| Junglerice |
Echinochloa colona |
Poaceae (Grass Family) |
Grass |
| Kikuyugrass |
Pennisetum clandestinum |
Poaceae (Grass Family) |
Grass |
| Knotgrass |
Paspalum distichum |
Poaceae (Grass Family) |
Grass |
| Lovegrass |
Eragrostis spp. |
Poaceae (Grass Family) |
Grass |
| Oat, Wild |
Avena fatua |
Poaceae (Grass Family) |
Grass |
| Orchardgrass |
Dactylis glomerata |
Poaceae (Grass Family) |
Grass |
| Panicum,
Fall |
Panicum dichotomiflorum |
Poaceae (Grass Family) |
Grass |
| Polypogon, Rabbitfoot |
Polypogon monspeliensis |
Poaceae (Grass Family) |
Grass |
| Quackgrass |
Elytrigia repens |
Poaceae (Grass Family) |
Grass |
| Sandbur, Longspine |
Cenchrus longispinus |
Poaceae (Grass Family) |
Grass |
| Velvetgrass, German |
Holcus mollis |
Poaceae (Grass Family) |
Grass |
| Wheat, Volunteer |
Triticum sp. |
Poaceae (Grass Family) |
Grass |
| Witchgrass |
Panicum capillare |
Poaceae (Grass Family) |
Grass |
| Common Name |
Scientific Name |
Family |
Category |
Sedges
| Kyllinga, Green |
Kyllinga brevifolia |
Cyperaceae (Sedge Family) |
Sedge |
| Nutsedge |
Cyperus spp. |
Cyperaceae (Sedge Family) |
Sedge |
| Nutsedge, Purple |
Cyperus rotundus |
Cyperaceae (Sedge Family) |
Sedge |
| Nutsedge, Yellow |
Cyperus esculentus |
Cyperaceae (Sedge Family) |
Sedge |
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