Synonyms: Dipsacus sylvestris Huds. Dipsacus fullonum var. sativus is reserved for cultivated teasel.
Common names: wild teasel; common teasel; card thistle; Fuller's teasel
Dipsacus fullonum (wild teasel) is a biennial forb/herb (family Dipsacaceae) that is native to Eurasia and northern Africa and naturalized across much of the United States and Canada. It can grow up to 2.5 m and is characterized by its prickly stems, leaves, and inflorescences, lanceolate leaves that are typically fused in pairs around the stem at their base, and spiny ovoid inflorescences with purple flowers that mature in whorls. Receptacle bracts are typically long and upcurved rather than spreading and reflexed, as in Dipsacus sativus. The cultivated form of wild teasel was historically used to card wool and is used in flower arrangements. Wild teasel can form dense stands that are impenetrable to humans and livestock and can outcompete native vegetation in meadows, stream sides, and other moist environments.Cal-IPC Rating: Moderate?
CDFA Rating: None?
Plant Assessment Form - Information gathered by Cal-IPC on the impacts, rate of spread, and distribution of invasive plants in California. Does not include management information.
Species ID Card
Invasive Species ID Card - To support field identification of early detection species, Cal-IPC has designed a set of Species ID cards that can be downloaded, printed double-sided, and trimmed to size.
Weed Management Notes
- Management Notes - Information on management techniques and effectiveness from the University of California Cooperative Extension’s Weed Research & Information Center.
Cal-IPC Newsletter Articles
- Lessons from the front: Taking stock to avoid surprises. Kelly, Mike. Vol 05, Issue 1
Cal-IPC Symposium Presentations
Presentations are linked where available. Where a presentation is not available, find more information by reading the abstract in the Cal-IPC Symposia Archive.
There are no Symposium presentations associated with this species yet.
Other Dipsacus fullonum Information
- CalPhotos - Images of plants taken mostly in California.
- Calflora - Distribution map and records of this species in California.
- CalWeedMapper - Distribution map of this species in California with ability to determine regional priorities.
- EDDMapS - Distribution of this species in North America.
- Jepson Interchange - Information on this plant's taxonomy, biology, and distribution from UC Berkeley's Jepson Herbarium.
- USDA PLANTS Database - Information on identification and distribution, with links to websites in individual states.