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.

Teasel is a unique, non-native plant that grows throughout Marin. The flower head is egg-shaped and covered with tiny flowers ranging from off-white to pink to lilac. Its dried flower, with its ...

Here are a few invasive species Wisconsinites should keep an eye out for and how you can identify them. If you have any invasive species on your property, consult fact sheets from the University of ...