Identifying Wildflowers: Common St. John’s Wort (non-native)

Common Name: St. John’s Wort
Scientific Name: Hypericum perforatum
Family: Hypericaceae
Origins: Europe (non-native)
Flowering Time: June – September
Habitat: Fields, roadsides, and waste places.
Range: Found throughout most of North Amercia, except the far north, southern US and praires.
Use: Herbal remedies for depression, topical treatment for wounds, abrasions, burns and muscle pain


Niering, William A., Nancy C. Olmstead, and John W. Thieret. National Audubon Society Field Guide to North American Wildflowers: Eastern Region. New York: Alfred A. Knopf, 2001. Print.

Reuter J, Huyke C, Scheuvens H, Ploch M, Neumann K, Jakob T, Schempp CM (2008). “Skin tolerance of a new bath oil containing St. John’s wort extract”. Skin Pharmacol Physiol. 21 (6): 306–311.

Post a comment