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: 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: 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: Prostrate Spurge (Euphorbia supina)
Looking at this pesky annual weed you would never know that it is in the same genus as pointsetta. A native of eastern United States, this warm weather weed has…
Weeds and Their Control: Hairy Galinsoga (Galinsoga ciliata)
Hairy galinsoga is an annual weed that is native to Mexico and South America but is now found on the east, mid-west, and west coast of the United States. It…
Weeds and Their Control: Common Ragweed (Ambrosia artemisiifolia)
The bane of every hay fever sufferer, common ragweed is a summer annual native to North America and is found throughout the United States including Hawaii but not Alaska. It…
Weeds and Their Control: Giant Foxtail Grass (Setaria faberi)
Giant foxtail was introduced into North America from East Asia in the 1930s and is now a common weed in the eastern half of the United States especially in the…
Weeds and Their Control: Spanish Needles (Bidens bipinnata)
Spanish needles is a summer annual native to tropical America. It is found along most of the East coast, Midwest, South and west to California. Spanish needles prefers partial shade,…
Weeds and Their Control: Bermudagrass (Cynodon dactylon)
Bermudagrass is a perennial grass native to India and Africa and was introduced into North America in 1751. It is now found in most of the continental United States and…
Weeds and Their Control: Barnyard grass (Echinochloa crus-galli)
Barnyard grass is a summer annual native to tropical Asia but is widespread now in Europe as well as the United States. It grows in all states except Alaska and…