Triadenum fraseri

Triadenum fraseri Fraser's marsh St. John's-wort

Plant grows in the wild/spontaneouslyPlant is native to PA Synonyms:   Hypericum fraseri
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Grows in bogs, swamps & moist meadows.

Present throughout the state.

Wetland codes
EMP: OBL
NCNE: OBL



Flowers July & August.

S-rank:  S4 (Apparently Secure)
G-rank:  G5 (Secure)

Marc Wanner (Guest)

Posted on 19 September 2026

Found Triadenum fraseri (ID'd by Google images) on the shore of Rollins Pond in Santa Clara, New York, fifty miles south of the Canadia border.

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Triadenum fraseri Fraser's marsh St. John's-wort

Plant grows in the wild/spontaneouslyPlant is native to PA
Synonyms:   Hypericum fraseri
Add to MyPlants
View Distribution
Triadenum fraseri gallery
Plant Summary
perennial forb native flower color: pink
Common Names
Fraser's marsh St. John's-wort