Kebnat
PLANTS

Common St. Johnswort

Hypericum perforatum

Plants
IntroducedHerbPerennial
Common St. Johnswort, photo 1 of 5
Common St. Johnswort, In flower
Common St. Johnswort, In fruit

Perennial herbaceous plant. Introduced to Québec. Grows in forests and in thickets.

There are 1,618 observations of Common St. Johnswort in Québec, mostly in Montérégie, Montréal and Estrie, and it has been reported in 16 of the 17 regions. They peak in July and become rare from October to May.

Through the year

JFMAMJJASOND

Where to see it

  1. Montérégie230
  2. Montréal218
  3. Estrie213
  4. Capitale-Nationale186
  5. Outaouais178
  6. Laurentides163
  7. Chaudière-Appalaches91
  8. Lanaudière91
  9. Bas-Saint-Laurent70
  10. Mauricie36
  11. Centre-du-Québec33
  12. Gaspésie–Îles-de-la-Madeleine30
  13. Saguenay–Lac-Saint-Jean27
  14. Abitibi-Témiscamingue25
  15. Laval22
  16. Côte-Nord5

Habitat

ForestMario Hains
ThicketsNicholas A. Tonelli
FieldsFélix Mathieu-Bégin

Similar species

Spotted St. John's-wortHypericum maculatum
Spotted St. JohnswortHypericum punctatum
Pale St. JohnswortHypericum ellipticum
Aaron's beardHypericum calycinum
TOXIC
Petty spurgeEuphorbia peplus
DEADLY
Bird's-foot trefoilLotus corniculatus
Shrubby St. JohnswortHypericum prolificum
Dwarf St. JohnswortHypericum mutilum
Kalm's St. JohnswortHypericum kalmianum
TOXIC
Stinking willieJacobaea vulgaris