Colorado, Hawaii, and parts of Montana categorize the common mullein as a noxious weed. What does this mean exactly? The "noxious" designation indicates that a non-native plant that can harm other ...

Canada thistle. Canada thistle (Cirsium arvense), an invasive noxious weed from Europe and Asia, grows 2 to 4 feet tall and has oblong spiny leaves and clusters of 1 to 5 small, tubular flowers that ...

Got weeds in your lawn? Me too. And although it's tempting to reach for a spray bottle, that shouldn't be our first ...

Noxious weeds outcompete native plants for food, space, light and nutrients. The Colorado Department of Agriculture operates a Noxious Weed Program responsible for creating and updating the ...

April (and May and June) showers bring …weeds. The bane of every gardener’s existence, weeds have run rampant this year because of all the rain we’ve received.

High Line Canal Conservancy cleans up unwanted weeds 01:40. You've probably seen them before. Goat heads (or puncture vines) are a noxious, non-native weed here in Colorado.

Common burdock (Arctium minus) is a biennial native to Europe that was accidentally introduced into the U.S. in the 1600’s. It invades roadsides, ditches, pastures, waste areas, forested areas ...

Houndstongue takes its common name from the similarity between its leaves and the tongue of a panting dog. Each leaf contains veins or groves that spread down to the distal or outer part of each leaf ...

The first step to removing weeds from your lawn and garden is identification. Learn about 20 common types of weeds and how to treat them.

Experts explain how to identify and get rid of 25 common lawn weeds before they take ... Another identifier of this type of weed is its flowers, ... according to the Colorado State University ...

Native to North America, sunflowers have been cultivated since pre columbian times for its edible seeds. They are common weeds of roadsides, fence rows, fields, pastures, and waste areas. Flowering is ...