Weeds and Their Control: Curly Dock (Rumex crispus)
Karen 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…
Weeds and Their Control: Purslane (Portulaca oleracea)
The origin of purslane is somewhat obscure. It appears to be indigenous to North Africa, the Middle East, and parts of Asia but archaeological evidence suggests that it may have…
Weeds and Their Control: Buckhorn Plantain (Plantago lanceolata)
Buckhorn plantain is a perennial weed native to Eurasia introduced by European settlers when they came to American. It is now found throughout the United States including Alaska and Hawaii.…
Weeds and Their Control: Yellow Woodsorrel (Oxalis stricta)
A common weed in gardens and potted plants, yellow woodsorrel is native to North America and is known throughout continental United States. It is an herbaceous perennial that prefers full…
Weeds and Their Control: Shepherd’s Purse (Capsella bursa-pastoris)
A native of Europe and Asia Minor, shepard’s purse is a winter or summer annual that has spread throughout the United States including Alaska and Hawai. It is a member…
Weeds and Their Control: Prostrate Vervain (Verbena bracteata)
Prostrate vervain is a native weed that grows as an annual or short-lived perennial throughout the United States. It likes a sunny site with dry, infertile soil and often grows…
Weeds and Their Control: Canadian Thistle (Cirsium arvense)
The attractive flowers on Canadian thistle belie the fact that this plant is one of the most persistent weeds that can come into the garden. A native of Eurasia, it…