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

Hypericum perforatum

(Common St. Johnswort)

 

Photos of Hypericum perforatum.

PHOTO: st. john's wort  PHOTO: st. john's wort

 

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.