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, ...

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.

Cutleaf teasel is currently blooming and is the more aggressive of the two invasive teasel species found in Illinois. Ken Johnson Ken Johnson Cutleaf teasel is currently blooming and is the more ...

Bridget Flanagan from The Great Ouse Valley Trust in Huntingdonshire discusses the unique association between teasel and goldfinches.