Butterweed
Erigeron canadensis
Erigeron canadensis, commonly known as Canadian fleabane, is a widespread herb found in North America. Traditional medicinal uses of this plant are not well-documented; its primary historical significance lies in its ecological role and invasive characteristics. Scientific studies have shown that E. canadensis maintains similar genetic diversity both in its native and non-native ranges, with some genotypes contributing more significantly to its spread. The species exhibits stronger city-level genetic differentiation compared to other plants but overall shows limited population structure. A study documented 4773 invasive plant occurrence records, noting Erigeron canadensis as one of the most frequently recorded invasive species, alongside co-invasion by three Asteraceae species which increased plant diversity but also community invasibility. No major safety issues or drug interactions have been reported for E. canadensis to date.
- Best evidence
- D
- Cautions
- —
Informational only. Traditional use does not mean proven effectiveness. Evidence and safety vary — check the cited sources.
What the science says
- The study found that E. canadensis populations maintained similar genetic diversity both in native and non-native ranges, with some genotypes contributing disproportionately to its spread.
- Erigeron canadensis showed stronger city-level genetic differentiation compared to other species, but overall most species exhibited limited population structure.
- The study documented 4773 invasive plant occurrence records, with Erigeron canadensis being one of the most frequently recorded species.
- Co-invasion by three Asteraceae species increased plant diversity but also community invasibility.
Frequently asked questions
What is Butterweed?
Butterweed (Erigeron canadensis) is a plant documented in FolkKB's traditional-medicine reference, drawn from sourced literature and cross-checked against the evidence.
What does the scientific evidence say about Butterweed?
4 sourced findings are recorded for Butterweed; the strongest carries evidence grade D. For example: The study found that E. canadensis populations maintained similar genetic diversity both in native and non-native ranges, with some genotypes contributing disproportionately to its spread.
How strong is the evidence for Butterweed?
The strongest finding for Butterweed carries evidence grade D — preliminary or traditional. Grades run A (strongest) to D (preliminary or traditional).
Is Butterweed safe? What are the side effects?
No major safety issues are recorded for Butterweed in our sources, but the data may be incomplete. Consult a qualified professional before use.
Does Butterweed interact with medications?
No drug interactions are recorded for Butterweed in our sources. This does not rule them out — check with a pharmacist.
What are the common names of Butterweed?
Butterweed is also known as: Мелколепестник канадский.
Is Butterweed a proven treatment?
No. FolkKB is informational only. Traditional use and early findings are not proof of efficacy or safety — consult a qualified professional and never self-treat.
Sources
- T2 Quantitative abundance and distribution data from the first systematic survey of alien invasive plants in the Xiaoxing'an Mountains, China (2022-2023). literature abstract metadata
- T2 Genetic Diversity and Population Structure in Cities Is Not Consistent Among Cosmopolitan Plant Species. literature abstract metadata
- T2 Co-invasion of three invasive alien plants increases plant taxonomic diversity and community invasibility. literature abstract metadata
- T2 Population Genomics of a Cosmopolitan Weed Provides Insights Into Its Local Adaptation and Recent Demographic History. literature abstract metadata