Milk thistle (Silybum marianum) can be a pain if it's growing in your yard.It's non-native and can be an invasive plant, as Keri Wilson, horticulturist and writer for Garden Media Group, points out, ...

Yellow Starthistle: Identification & Control Methods Yellow starthistle ( Centaurea solstitialis ) is considered a noxious weed in 12 Western and upper Midwest states.

Canada thistle (Cirsium arvense) is an aggressive, invasive plant. Here's how it spreads and how to identify it so it doesn't take over your garden.

Contrary to its name, Canada thistle was actually introduced from Eurasia. Its highly aggressive manner crowds out native species and is difficult to control. This plant is targeted by Eagle County’s ...

COLUMBUS, Ohio, Sept. 29. -- The authorities of the Agricultural Experiment Station in this State are greatly interested in the appearance of a new and very annoying weed within the borders of Ohio.

With California Invasive Weeds Awareness Week just around the corner (July 17-23), there are three words every Californian should know: yellow star thistle. According to a new study, California is ...

A thistle is a weed that normally lays flat and typically grows in areas of dry soil. Thistles are classified as an invasive weed in the United States. There are more than 10 identified species.

VAIL, Colorado -Plumeless thistle (Carduus acanthoides) and musk thistle (carduus nutans) are commonly seen plants that are currently blooming around Eagle County. They grow similarly and can be ...