St. John's Wort | Hypericum perforatum
Photo Credit: Rob Routledge
Photo Credit: Steve Dewey
Photo Credit: Ohio State Weed Lab Archive
Annual; stems are branching, green to rust-colored and woody at the base. Yellow flowers with black dots on the edged of the petals. Opposite leaves with scattered translucent dots that make the leaf look perforated when held up to light.
Plant Details
| Habitat Notes | Pastures, rangeland, prairies, roadsides and disturbed sites. |
|---|---|
| Mature Height | 1-3’ |
