Northern St. John's Wort (Hypericum boreale (Britton) E.P. Bicknell)
Also known as northern st. Johnswort.
↑Summary
A small, short-lived perennial of wetlands, native to the northeastern US and Canada.
↑Range - Expand
Legend | Color |
Native | |
Introduced | |
Native or Not Present | |
Introduced or Not Present |
This tentative map is based on our own research. It may have limited data on Canada and/or Mexico, and there is some subjectivity in our assignment of plants as introduced vs. expanded. Read more in this blog post.
Although this plant occurs somewhere in each of these regions, it may only occur in a small part of some or all of them.
↑Similar Plants
↑Habitat
Found in a variety of sunny to lightly shaded wetlands, including bogs, marshes, and margins of ponds and streams. In the south of its range it is limited to sinkhole ponds in mountains and interdune depressions along the coast. It is less common in anthropogenic habitats but grows in commercial cranberry bogs and may be spread to new regions with cranberry plants.
↑Life Cycle
Northern St. John's wort is a short-lived perennial. It usually lives 2-3 years.
↑Links & External Resources
• Hypericum boreale (northern St. Johnswort) | USDA PLANTS Database (About This Site)
• Hypericum boreale | Go Botany (About This Site)
• Northern St. John's-Wort | iNaturalist (About This Site)
• Hypericum boreale | Biota of North America Project (BONAP) (About This Site)
• Hypericum boreale | NatureServe Explorer (About This Site)
• Hypericum boreale | Flora of North America (About This Site)
• Northern St. Johnswort | Maryland Biodiversity Project (About This Site)
• Hypericum boreale (Northern St. John's-wort) | Minnesota Wildflowers (About This Site)
• Hypericum boreale (Britt.) Bickn. (Northern St. John's-wort) | Digital Atlas of the Virginia Flora (About This Site)