VAIL, Colorado – If there was a poster child for noxious weeds, thistles could do the job. They are easily noticed with big, pink flowers and sharp spines. They form dense colonies and can be found ...

For the past few years, I’ve participated in “Thistle Thursdays,” targeting a popular trail near Jackson, Wyoming. The weekly weed party was organized in 2019 by Morgan Graham, wildlife habitat ...

With weed season on its way in Pitkin County, officials are warning that failing to keep yards free of certain pests could draw penalties and fines.One of this county’s most notorious weeds – the ...

BOZEMAN – This article highlights the evolution of glyphosate (Roundup, RT3, and other generics)-resistant Russian thistle in Montana. Russian thistle ( Salsola tragus L.), a native of southeastern ...

Plumeless thistle (Carduus acanthoides) is a winter annual or biennial that forms dense monocultures outcompeting other plants for light, nutrients and moisture. Listed as a noxious weed in Idaho, ...

A non-native thistle seen as detrimental to grazing and that could possibly contaminate pasture and hay crops may be put on Washington’s list of weeds that must be eradicated in all counties. The ...

This has been a phenomenal year for germination of noxious weeds. Scotch thistle, for instance. Scotch thistle grows up to 13 feet tall. Cutting the root 2 inches below ground will kill that root and ...

Canada thistle is an invasive plant with a deep, extensive root system that requires persistence to completely remove from your lawn. Weeding out young thistles by hand and applying herbicides at the ...

close-up of canada thistle in dirt - butterfly's dream/Shutterstock If you've ever gone on a hike and seen a familiar green, spiky-looking plant, you've probably spotted Canada thistle (Cirsium ...

Canada thistle was probably introduced to America around 1750 and the state of Vermont enacted noxious weed legislation against it in 1795. It was proclaimed a noxious weed in Nebraska in 1873.

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 ...

Sow thistles look like scraggly dandelions with spiny leaves. Vicky McMillan Provided Sow thistles look rather like scraggly dandelions with prickly leaves. They’re neither dandelions nor thistles, ...