Sow & Tell
Weeds: how to identify and control 146 weeds
How to identify 146 common weeds, which ones are dangerous to touch or eat, where they grow and how to control them, gentlest first, from university Extension sources.
Broadleaf weeds
- Annual sowthistleSonchus oleraceus
- Benghal dayflowerCommelina benghalensis
- Bermuda buttercupOxalis pes-caprae
- Black MedicMedicago lupulina
- Broadleaf dockRumex obtusifolius
- Broadleaf PlantainPlantago major
- Buckhorn PlantainPlantago lanceolata
- BuffaloburSolanum rostratum
- Bull thistleCirsium vulgare
- Bur cloverMedicago polymorpha
- Canada thistleCirsium arvense
- CarpetweedMollugo verticillata
- Castor beanRicinus communis
- ChamberbitterPhyllanthus urinaria
- ChicoryCichorium intybus
- Common ChickweedStellaria media
- Common cockleburXanthium strumarium
- Common groundselSenecio vulgaris
- Common lambsquartersChenopodium album
- Common mallowMalva neglecta
- Common mulleinVerbascum thapsus
- Common purslanePortulaca oleracea
- Common ragweedAmbrosia artemisiifolia
- Cow parsnipHeracleum maximum
- Creeping bellflowerCampanula rapunculoides
- Curly dockRumex crispus
- Dalmatian toadflaxLinaria dalmatica
- DandelionTaraxacum officinale
- DollarweedHydrocotyle umbellata
- DoveweedMurdannia nudiflora
- Eastern black nightshadeSolanum ptycanthum
- English DaisyBellis perennis
- Field pennycressThlaspi arvense
- Florida betonyStachys floridana
- Florida pusleyRichardia scabra
- Garlic mustardAlliaria petiolata
- Giant hogweedHeracleum mantegazzianum
- Giant ragweedAmbrosia trifida
- GoutweedAegopodium podagraria
- Greater burdockArctium lappa
- Ground IvyGlechoma hederacea
- Hairy galinsogaGalinsoga quadriradiata
- Hairy nightshadeSolanum physalifolium
- HenbitLamium amplexicaule
- Hoary cressLepidium draba
- HorsenettleSolanum carolinense
- Japanese knotweedPolygonum cuspidatum
- JimsonweedDatura stramonium
- KochiaBassia scoparia
- LadysthumbPersicaria maculosa
- Lawn BurweedSoliva sessilis
- Leafy spurgeEuphorbia esula
- Lesser celandineFicaria verna
- Mock StrawberryPotentilla indica
- Mouseear ChickweedCerastium fontanum
- MugwortArtemisia vulgaris
- Musk thistleCarduus nutans
- Oxeye daisyLeucanthemum vulgare
- Palmer amaranthAmaranthus palmeri
- Pennsylvania smartweedPersicaria pensylvanica
- Persian SpeedwellVeronica persica
- Poison hemlockConium maculatum
- PokeweedPhytolacca americana
- Prickly lettuceLactuca serriola
- Prostrate KnotweedPolygonum aviculare
- Prostrate spurgeEuphorbia humistrata
- PuncturevineTribulus terrestris
- Purple DeadnettleLamium purpureum
- Purple loosestrifeLythrum salicaria
- Red sorrelRumex acetosella
- Redroot pigweedAmaranthus retroflexus
- Redstem filareeErodium cicutarium
- Russian knapweedRhaponticum repens
- Shepherd's purseCapsella bursa-pastoris
- SicklepodSenna obtusifolia
- Spiny amaranthAmaranthus spinosus
- Spotted knapweedCentaurea stoebe
- Spotted SpurgeEuphorbia maculata
- Star-of-BethlehemOrnithogalum umbellatum
- Stinging nettleUrtica dioica
- Tansy ragwortSenecio jacobaea
- Tumble pigweedAmaranthus albus
- VelvetleafAbutilon theophrasti
- Virginia buttonweedDiodia virginiana
- Water hemlockCicuta maculata
- White CloverTrifolium repens
- White snakerootAgeratina altissima
- Wild carrotDaucus carota
- Wild garlicAllium vineale
- Wild mustardSinapis arvensis
- Wild onionAllium canadense
- Wild parsnipPastinaca sativa
- Wild radishRaphanus raphanistrum
- Wild VioletViola sororia
- Yellow starthistleCentaurea solstitialis
- Yellow toadflaxLinaria vulgaris
- Yellow WoodsorrelOxalis stricta
Grassy weeds
- Annual bluegrassPoa annua
- BarnyardgrassEchinochloa crus-galli
- BermudagrassCynodon dactylon
- CheatgrassBromus tectorum
- CogongrassImperata cylindrica
- DallisgrassPaspalum dilatatum
- Field sandburCenchrus spinifex
- Foxtail barleyHordeum jubatum
- GoosegrassEleusine indica
- Green foxtailSetaria viridis
- JohnsongrassSorghum halepense
- Large crabgrassDigitaria sanguinalis
- MedusaheadTaeniatherum caput-medusae
- NimblewillMuhlenbergia schreberi
- QuackgrassElymus repens
- Smooth crabgrassDigitaria ischaemum
- TorpedograssPanicum repens
- Yellow foxtailSetaria pumila
Sedges
- Green kyllingaKyllinga brevifolia
- Purple nutsedgeCyperus rotundus
- Yellow nutsedgeCyperus esculentus
Vines
- Bittersweet nightshadeSolanum dulcamara
- English ivyHedera helix
- Field bindweedConvolvulus arvensis
- GreenbrierSmilax rotundifolia
- Hedge bindweedCalystegia sepium
- Ivyleaf morninggloryIpomoea hederacea
- Japanese honeysuckleLonicera japonica
- KudzuPueraria montana var. lobata
- Mile-a-minutePolygonum perfoliatum
- Oriental bittersweetCelastrus orbiculatus
- Poison ivyToxicodendron radicans
- Porcelain berryAmpelopsis brevipedunculata
- Tall morninggloryIpomoea purpurea
- Trumpet creeperCampsis radicans
- Virginia creeperParthenocissus quinquefolia
- Wild buckwheatPolygonum convolvulus
Shrubs and trees
- Atlantic poison oakToxicodendron pubescens
- Autumn oliveElaeagnus umbellata
- Chinese privetLigustrum sinense
- Himalayan blackberryRubus armeniacus
- LantanaLantana camara
- Multiflora roseRosa multiflora
- Poison sumacToxicodendron vernix
- Scotch broomCytisus scoparius
- Tree of heavenAilanthus altissima
- Western poison oakToxicodendron diversilobum
- WineberryRubus phoenicolasius
Horsetail
- Field horsetailEquisetum arvense