Weeds and Their Control: Hemp Nettle (Galeopsis tetrahit)
Karen Hemp nettle is native to Europe and northwestern Asia but has been introduced into North American and is a problem in the cool areas of the United States. It is…
Weeds and Their Control: Black Medic (Medicago lupulina)
Black medic is an annual or short lived perennial weed that is actually beneficial. Its roots have the ability to take nitrogen from the air and put it in the…
Weeds and Their Control: Annual Bluegrass (Poa annua)
A native of Europe, annual bluegrass is widespread in the United States occurring in all states including Alaska and Hawaii In mild climates it grows from fall to spring and…
Weeds and Their Control: Tall Buttercup (Ranunculus acris)
Tall buttercup is a perennial weed native to central and northeastern Europe and is now found in most of the United States where it is considered a noxious weed in…
Weeds and Their Control: Ground Ivy (Glechoma hederacea)
Also known as creeping Charlie, ground ivy is native of Europe and Asia that was brought to North America by early settlers for its medicinal and culinary value. It has…
Weeds and Their Control: Poorjoe/Common Buttonwood (Diodia teres)
Unlike its close relative, Virginia buttonweed, Poorjoe is an annual and prefers a somewhat dryer site and greater distribution. It is a native of Eastern United States and is now…
Weeds and Their Control: Curly Dock (Rumex crispus)
Although native to Europe and western Asia, curly dock is a perennial weed that has naturalized throughout North America and become invasive in some areas. It prefers rich, moist, heavy…
Weeds and Their Control: Field Bindweed (Convolvulus arvensis)
This trailing or climbing perennial is a native of Eurasia introduced into North America by 1739 and now found in all states except Alaska. It is classified as a noxious…
Weeds and Their Control: Wild Buckwheat (Polygonum convolvulus)
Wild buckwheat is a summer annual vine native to Asia that spread to Europe and then North American. It is found throughout the United States and is especially troublesome in…
Weeds and Their Control: Dodder (Cuscuta spp.)
Dodder is a unique weed because of its parasitic nature. It twines itself around another plant and attaches itself by means of haustoria, root-like structures that penetrate the host plant…