Showing 121 types of WEEDS
Latin Name: Alysicarpus Vaginalis
Native to the Old World tropics, but introduced to the U.S. and now found throughout the southeastern states north to Virginia, as well as in Hawaii and the West Indies.
Latin Name: Poa Annua
Native to Europe, but one of the most widely distributed weed grasses in the United States. It thrives in turf, gardens, crops, roadsides, or any other open area.
Latin Name: Sonchus Oleraceus
Native to Europe and found commonly throughout North America.
Latin Name: Paspalum Notatum
Native to South America, but now spread throughout all of Latin America, the West Indies, Hawaii, and the southeastern U.S.
Latin Name: Momordica Charantia
A native of Asia, this noxious, invasive vine is present in the United States in several eastern states including Florida, west along the Gulf Coast to Texas, and in Hawaii.
Latin Name: Echinochloa Spp.
Native to Eurasia and Africa, and now occurring throughout North America. This grass will grow in virtually any situation, crop or non-crop, landscape and turf.
Latin Name: Cynodon Dactylon
Native to Africa, but a common weed now around the world. Several hybrids are used as desirable turf.
Latin Name: Medicago Lupulina
Native to eastern Europe and Asia, but now found throughout the United States.
Latin Name: Rumex Obtusifolius
Native to Europe and Asia. Now widespread in the United States.
Latin Name: Circaea Lutetiana
Native to North America, and occurring from Maine south to Georgia, and west in all states to the Rocky Mountains.
Latin Name: Portulaca Amilis
Native to South America, and found in the United States from North Carolina to all of Florida.
Latin Name: Plantago Major
Native to Europe, but naturalized and now found commonly throughout the United States and southern Canada.
Latin Name: Plantago Lanceolata
Introduced from Europe, and now found throughout the United States and Canada.
Latin Name: Cardamine Bulbosa
Native to North America, and found in nearly every state east of the Rocky Mountains.
Latin Name: Medicago Polymorpha
Native to Eurasia, and now widespread in the western United States.
Latin Name: Aster Dumosus
Native to North America, and found throughout the entire eastern half of the United States, west to Texas.
Latin Name: Spermacoce Assurgens
Found in warm, humid climates of most continents, as well as Hawaii, the West Indies, and from Florida to Louisiana. Considered a native in the U.S., but also found throughout Latin America and in Asia.
Latin Name: Geranium carolinianum
Native to the United States, and widely distributed in the United States.
Latin Name: Axonopus Affinis
Found throughout the world in mild climates, and in the U.S. in the eastern half of the country.
Latin Name: Mollugo Verticillata
Native to tropical America, now distributed widely in the U.S.
Latin Name: Galium Aparine
Native to North America and widespread across the continent.
Latin Name: Chichorium Intybus
Native to Europe, but now found throughout the United States, and especially abundant in the northern and western states where it is a common roadside weed.
Latin Name: Trifolium Glomeratum
Native to Europe, but introduced to North America where it now is found uncommonly in the southeast states as well as California, Oregon, and Hawaii.
Latin Name: Amsinckia Intermedia
Coast fiddleneck is native to Oregon and California.
Latin Name: Stellaria Media
Introduced from Europe, and now widely distributed throughout the United States and Canada.
Latin Name: Potentilla Canadensis
A native plant found throughout the eastern third of the United States, and west to Wisconsin, Arkansas, and Texas.
Latin Name: Senecio Vulgaris
Introduced from Europe, and now widespread in the northern United States and Canada, and as far south as Texas and throughout the western states. An extremely common winter and spring weed.
Latin Name: Chenopodium Album
Native to Europe, and now an extremely common weed throughout the United States.
Latin Name: Portulaca Oleracea
Naturalized from Europe, and now a common problem weed throughout the world.
Latin Name: Ambrosia artemisiifolia
Native to the eastern United States, and still most common there, but found throughout North America.
Latin Name: Holcus Lanatus
Native to Europe and now widespread throughout the United States. Less common in the far northern states. It was introduced as a forage grass, but easily escapes cultivated areas.
Latin Name: Spergula Arvensis
Introduced from Europe, and naturalized throughout the western United States, somewhat in the eastern part of the country.
Latin Name: Trifolium Incarnatum
A native of Europe, but introduced as an ornamental plant to many other areas, and now widely spread throughout the United States in the eastern half of the country and along the west coast, as well as in Hawaii.
Latin Name: Dactyloctenium Aegyptium
Introduced from the Old World Tropics of Asia or Africa, and now found throughout much of the U.S., particularly in the southern states, and south throughout Latin America, in Europe, Australia, and Hawaii.
Latin Name: Rumex Crispus
Native to Europe and Asia. Now widespread in the United States.
Latin Name: Cyperus Retrorsus
A native plant in southeastern North America, now found from New York to Florida, and west to Texas and Oklahoma.
Latin Name: Paspalum Dilatatum
Native to South America, now common throughout the southwest United States.
Latin Name: Taraxacum Officinale
Introduced from Europe and now widespread and extremely common across North America.
Latin Name: Muhlenbergia Rigens
Native to the west coast of the United States. Commonly used in ornamental settings due to its size and symmetry.
Latin Name: Eupatorium Capillifolium
A native plant in North America, and found from New Jersey south to Florida, and west to Missouri and Texas. It also can be found in Latin America south to Guatemala and in the West Indies.
Latin Name: Bromus Tectorum
Introduced from the Mediterranean in packing materials, and now widely distributed throughout North America.
Latin Name: Eclipta Prostrata
Native to the eastern United States, but now spread throughout the country, most commonly found in the southern U.S.
Latin Name: Panicum Dichotomiflorum
Native to central and eastern United States, now spread throughout the western states as well.
Latin Name: Convolvulus Arvensis
Native to Eurasia but introduced to the United States, where it occurs throughout the continent, and is considered to be one of the most troublesome weeds here and throughout the world.
Latin Name: Thlaspi Arvense
Introduced from Europe and now found throughout the United States. It grows commonly in grain fields and pastures, and the strong odor of the plant causes a bitter flavored milk from livestock that eat it.
Latin Name: Richardia Scabra
Considered native to South America, but found commonly in the southeast United States and into the northeast, in Hawaii and Puerto Rico, and throughout Central America.
Latin Name: Polygonum Cilinode
A native vine found in the states east of the Mississippi and in Minnesota, but not generally in the extreme southern states.
Latin Name: Cyperus Croceus
A native plant in eastern North America, occurring from Pennsylvania south throughout Florida, and west to Texas, Oklahoma and Missouri. It also occurs in Latin America and the West Indies as well as eastern Asia.
Latin Name: Solidago Spp.
Over 150 species of goldenrod occur in North America, and some will be found in every state including Hawaii, throughout Canada and into Latin America and the West Indies. Many of the species are native plants in North America.
Latin Name: Eleusine Indica
Introduced from Europe, but now found throughout most of the United States.
Latin Name: Setaria Viridis
Native to Europe, now common throughout much of the United States, especially in cooler climates. A particular problem in alfalfa fields, but also occurring in other row crops, along roadsides, waste areas, and in landscape.
Latin Name: Glechoma Hederacea
Native to Eurasia, but introduced to North America as a garden and herbal plant. It now is found throughout North America to Alaska, with the exception of the dry southwestern states of Nevada, Arizona, and New Mexico.
Latin Name: Solanum Carolinense
Native to the southeastern United States, but now spread from coast to coast and occurring in almost every state, as well as into southern Canada.
Latin Name: Conyza Canadensis
Native to North America and widely distributed throughout the continent.
Latin Name: Lolium Multiflorum
A native of Europe, and now widespread throughout the United States.
Latin Name: Sorghum Halepense
Native to the Mediterranean region, but deliberately introduced to the United States as a grass desirable for forage. Now widespread throughout the warm regions of the U.S. where it is a severe pest weed problem.
Latin Name: Echinochloa Colona
Native to Europe, and now widespread throughout the west and southwest United States. Found commonly in both cultivated fields and in waste areas.
Latin Name: Pennisetum Clandestinum
Native to tropical Africa, but introduced deliberately to California as a cover along slopes and ditch banks for erosion control. As a very fast growing grass it also has been used for a turfgrass, but it is capable of escaping and invading other grasses where it is objectionable.
Latin Name: Scleranthus Annuus
Introduced from Europe, and found throughout the eastern half of the United States and Canada, as well as in California and the Pacific Northwest.
Latin Name: Kochia Scoparia
Native to Eurasia, this plant was introduced to North America and now is found in nearly every state, with the exception of the extreme southeast.
Latin Name: Digitaria Sanguinalis
Native to Europe and now widespread in the United States.
Latin Name: Soliva Pterosperma
Native to South America, and now found along the Pacific Coast states and along the southern states to North Carolina, as well as throughout Latin America and in Europe.
Latin Name: Cardamine Oligosperma
Native to North America, and found most commonly in the western states, east to Montana and Colorado, but occurring sporadically in the north central to northeast states as well. Found also in western Canada north to Alaska.
Latin Name: Sisymbrium Irio
A native of Europe, now common throughout the western states.
Latin Name: Galium Tinctorium
Native to North America, and found throughout the eastern half of the U.S. and Canada, and west to Texas and possibly Arizona.
Latin Name: Cerastium Vulgatum
Native to Europe, and now found throughout most of the United States and southern Canada.
Latin Name: Chenopodium Berlandieri
Native to Europe, and now established in the western United States.
Latin Name: Dactylis Glomerata
Native to Eurasia, now widespread throughout much of the United States.
Latin Name: Orthocarpus Purpurascens
A native plant that is widely distributed in the western United States, south into Mexico and north into southern Canada.
Latin Name: Polygonum Pensylvanicum
Native to eastern North America, and introduced to the western states where it now can be found throughout most of the continent.
Latin Name: Hydrocotyle Spp.
At least 15 species of Hydrocotyle occur in the United States and Hawaii, all very similar in appearance and habits. Most are native plants that occur primarily in warmer, more tropical climates.
Latin Name: Lepidium Latifolium
Native to Europe and western Asia, now widely distributed throughout the United States and into Mexico.
Latin Name: Lolium Perenne
Native to Europe, but now widely distributed throughout the United States.
Latin Name: Veronica Persica
Native to Europe and now widespread in North America.
Latin Name: Matricaria Matricarioides
Native to the western United States, but now found across the continent to the east coast and as far north as Alaska.
Latin Name: Sida Spinosa
Native to tropical Latin America and southern United States, and found throughout the eastern half of the U.S. and west into Arizona. It also has been introduced to Hawaii as a common roadside weed.
Latin Name: Polygonum Arenastrum
Introduced from Europe. Now found throughout the United States and southern Canada.
Latin Name: Chamaesyce Humistrata
Native of the United States, and widely spread across the continent and south into South America
Latin Name: Tribulus Terrestris
Native to the Mediterranean area and southern Europe. Now scattered over much of the U.S.
Latin Name: Lythrum Salicaria
Native to Europe, but introduced as an ornamental plant to North America, where it now occurs in nearly every state in the U.S. with the exception of the arid Southwest and the extreme Southeast. It also occurs throughout most of Canada.
Latin Name: Agropyron Repens
Introduced from Europe and now found throughout most of the United States, with the exceptions of the warm southern areas from South Carolina to Arizona.
Latin Name: Trifolium Arvense
A native of Europe, but introduced to North America where it now occurs throughout the eastern half of the United States, all of southern Canada, and in the western U.S. along the Pacific Coast and in the states bordering Canada. It also occurs in Hawaii.
Latin Name: Vulpia Myuros
Introduced from Europe, and now found throughout the United States, in southern Canada and Latin America, as well as in Alaska and Hawaii. V. myuros and F. megalura are sometimes separated as two species, but currently combined as only one.
Latin Name: Trifolium Pratense
Native to Eurasia, but introduced as a pasture plant which has escaped cultivation and is now widespread in the United States.
Latin Name: Rumex Acetosella
Native to Europe, now distributed widely across the United States and southern Canada.
Latin Name: Amaranthus Retroflexus
Native to tropical Latin America, but now widespread in the United States.
Latin Name: Bromus Catharticus
Native to South America, and introduced to the United States for cultivation as a winter forage in the southern states. Strong growth in winter and early spring make it suitable for forage. It commonly escapes cultivated areas and becomes troublesome in crops or non-crop situations.
Latin Name: Salsola Tragus
Native to Eurasia, but introduced to the United States from Russia in sacks of flaxseed, that spilled along railways as it was transported, spreading the weed throughout the western U.S.
Latin Name: Capsella Bursa-pastoris
Native to Eurasia, but now found throughout North America as far north as Alaska.
Latin Name: Digitaria Ischaemum
Native to Europe and now widespread in the United States.
Latin Name: Lotus Purshianus
Native to the western United States, and widely distributed from southern Canada south into Mexico in the west.
Latin Name: Cerastium Glomeratum
Native to Europe, and now found throughout the United States.
Latin Name: Trifolium Subterraneum
Native to Europe and introduced to the United States, where it now is found along the Pacific Coast, and from Louisiana along the Gulf States to Florida and sporadically north along the Atlantic Coast.
Latin Name: Anthoxanthum Odoratum
Native to Europe, and now spread widely across the U.S. , south through Latin America, and in Asia and Australia.
Latin Name: Panicum Repens
Thought to have originated in Europe, but now found on most continents and in the U.S. from the Carolinas along the Gulf states to Texas.
Latin Name: Polygonum Caespitosum
Native to Asia, and now found along the entire east coast of the United States, south through Florida and west to Louisiana.
Latin Name: Amaranthus Albus
Native to tropical Americas, and now widespread throughout much of North America.
Latin Name: Abutilon Theophrasti
Native to southern Asia, but introduced to the United States as an ornamental plant and now found throughout the U.S., southern Canada, and into Latin America as an escape from cultivation.
Latin Name: Diodia Virginiana
Native to the United States, and found from Texas north to Illinois, east to the Atlantic coast and south to all the Gulf Coast states.
Latin Name: Eichhornia Crassipes
Native to Latin America, and thought to have been introduced to the United States as an ornamental plant. Now present throughout the milder climates of the U.S., from Florida to California, where it can be a severe problem in navigable waterways and irrigation canals, where its thick, smothering growth obstructs movement and water flow.
Latin Name: Trifolium Repens
Native to Europe, but introduced as an ornamental and forage plant, and now found commonly throughout North America. It is a weed in turf grasses and landscape, as well as in many crop settings. It tolerates close mowing and becomes a problem by outcompeting the turf.
Latin Name: Polygonum Convolvulus
Introduced from Europe, and now widespread throughout the United States and southern Canada.
Latin Name: Daucus Carota
Native to Europe and introduced as a garden plant. It escaped cultivation and is now a common and problem weed throughout North America.
Latin Name: Brassica Kaber
Native to Eurasia, and now found throughout the United States.
Latin Name: Raphanus Sativus
Native to Europe, and now widespread in North America. The garden variety of radish is a cultivated form of wild radish. R. sativus is white-flowered, while R. raphanistrum is yellow-flowered.
Latin Name: Panicum Capillare
Native to the eastern United States, and now common throughout the U.S. and southern Canada.
Latin Name: Setaria Glauca
Native to Eurasia, but an important weed species in cultivated areas throughout the world, including much of the United States.
Latin Name: Cyperus Esculentus
Native to the Old World, but now spread throughout the world, including all of the United States, much of Canada, and south through the tropical areas of South America. It is one of the most important weed pests in the U.S. and much of the rest of the world.
