Weeds and Their Control: Canadian Thistle (Cirsium arvense)
Karen 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…
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: Rough Cinquefoil (Potentilla norvegica)
Rough cinquefoil, also called Norwegian cinquefoil, is an annual, biennial, or short-lived perennial native to Europe and Asia but is found in the eastern half of the United States and…
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: Yellow Nutsedge (Cyperus esculentus)
Anyone who has had yellow nutsedge in their lawn knows what a terrible problem it can be. Its leaves resemble grass but grow more quickly and so make the lawn…
Weeds and Their Control: Common Chickweed (Stellaria media)
Common chickweed is a cool-season annual native to Europe but is found throughout North America. It prefers moist fertile soil in sun or partial shade and is common in disturbed…