Common teasel (Dipsacus fullonum) is a biennial weed native to Europe and Northern Africa. It was originally introduced into the U.S. in the 1700’s. It invades rights-of-way, pastures, riparian areas, ...

What's that tall, spiky plant with the unique flower heads that looks like something out of a fairy tale? It might seem harmless, but if it's common teasel (Dipsacus fullonum) or cutleaf teasel ...

Discover how to effectively manage the invasive common and cut-leaved teasel, which threatens open areas like prairies, savannas, sedge meadows, roadsides, and conservation plantings. This publication ...

If you’ve driven along any interstates or highways in Illinois, there’s a good chance you’ve seen tall plants with spiky flower heads. Teasels have become an increasingly common site across Illinois.

It stands tall and prickly, bearing seed heads that dare you to get close. Where there’s one, there are legions. They are well-armed and on the offense. The plant is teasel, a species that hitched a ...

Teasel is a dangerous plant, a pretty weed that can grow 7 feet high or taller and crowd out anything else in the field or ditch or stream bank where it grows. And it has been creeping into Lancaster ...

Staff from the City of Iowa City and the Iowa City School District are working together this week to eradicate a large infestation of teasel, an extremely invasive plant species that has taken root ...

As a guy gets older, he often forgets important facts of life. After I read Wednesday's column about botanizing birders, I realized I had left out three roadside wildflowers, often called weeds, that ...