Conservation Science
Invasive Plants

What is an Invasive Plant?

Invasive Plants in the Chicago Region

Chicago Botanic Garden Invasive Plants Policy

What can you do?

Chicago Botanic Garden

Plant Science — Conservation

Checklist: Invasive Plants in the Chicago Region

Cirsium arvense

(Canada thistle)

 

Photos of Cirsium arvense.

PHOTO: cirsium arvense  PHOTO: cirsium arvense

PHOTO: cirsium arvense

 

For a one-on-one consultation, visit the Plant Information Service at the Gateway Visitor Center or call the Plant Information Hotline at (847) 835-0972.