Weeds and Their Control: Purslane (Portulaca oleracea)
Karen 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…
Weeds and Their Control: Fuller’s Teasel (Dipsacus fullonum)
Brought to North America from Europe in the early 1700’s to raise the nap of wool cloth, fuller’s teasel naturalized and is now considered a weed in many parts of…
Weeds and Their Control: Velvetleaf (Abutilon theophrasti)
A native of southern Asia, velvetleaf is also known as Indian mallow. It was introduced into North American in the 1700s and is now found throughout the US. It is…
Weeds and Their Control: Carolina Geranium (Geranium carolinianum)
Carolina chickweed is native to Eastern United States but is known throughout North America where it is a winter annual from Zone 6 southward but a spring weed in northern…
Weeds and Their Control: Wild Garlic (Allium vineale)
A native of Europe, wild garlic was brought to North America in soil used as ballast in ships. It has become an invasive weed in many parts of the eastern…