Common names: artichoke thistle; cardoon; wild artichoke
Cynara cardunculus (artichoke thistle) is a large perennial thistle (family Asteraceae) found below 500 m elevations throughout California, except in the Great Basin and Desert Regions. Artichoke thistle prefers disturbed open sites, including grassland, chaparral, coastal scrub, and riparian areas. This thistle is closely related to cultivated artichokes (Cynara scolymus), and the two species hybridize frequently. Artichoke thistle is also sometimes grown as an ornamental plant, and is available commercially. It reproduces by seed and sometimes by resprouting from root fragments. When attempting control by mechanical removal, most of the plant’s large taproot must be removed to avoid resprouting.Cal-IPC Rating: Moderate
CDFA Rating: B*
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
- Are we making progress? A bird's-eye view of change in invasive plant cover in central-coastal Orange County. Burger, Jutta C.. Vol 27, Issue 2
- Tracking eradication progress . Guise, Vince. Vol 21, Issue 3
- Taking to the air to locate, prioritize and treat effectively. Burger, Jutta C.. Vol 21, Issue 2
- “Conservation Across Borders” in San Jose. Cal-IPC. Vol 14, Issue 2
- Invasive plants research at UC Riverside. Holt, Jodie S.. Vol 13, Issue 2
- Education: Wildland weed tours and talks. Kelly, Mike. Vol 08, Issue 1
- Roundup of Arundo projects reveals commitment, strategic weakness. Kelly, Mike. Vol 07, Issue 2
- Richmond weed abatement ordinance. . Vol 07, Issue 1
- Starr Ranch Sanctuary artichoke conference. Kelly, Mike. Vol 06, Issue 3
- Legendary stewardship award. Goode, Suzanne. Vol 06, Issue 2
- Killing the beast: A cooperative approach for control of Arundo donax in the Santa Ana River watershed. Stein, Eric D.; Vartanian, Valerie. Vol 05, Issue 3
- Lessons from the front: Taking stock to avoid surprises. Kelly, Mike. Vol 05, Issue 1
- Exotic pest plants of greatest ecological concern in California September 1994. Cal-IPC. Vol 02, Issue 4
- The ecology and management of the wild artichoke Cynara cardunculus. Pepper, Alan; Kelly, Mike. Vol 02, Issue 1
- California Exotic Pest Plant Council draft list exotic plants of greatest concern October 1993. CalEPPC. Vol 01, Issue 4
- Control of exotic plants in an herbaceous understory. Perala, Christine; Hoover, Doris A.; Parra-Szijj, E.A.. Vol 01, Issue 3
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.
- Evolution of an invasive plant control program – adoption of early detection and rapid response. Mitrovich, Milan (2018)
- Effects of an exotic herbaceous perennial, Cynara cardunculus, on small mammals and songbirds. DeSimone, Sandra A.; Gibson, Scott E. (2010)
- Artichoke thistle (Cynara cardunculus) control efforts and community recovery in historic southern California rangeland. Royall, Margaret; Murdock, Michelle; Suding, Katharine; Smith, Trish (2007)
- Non-chemical Exotic Control in Coastal Sage Scrub Restoration at an Audubon Preserve. DeSimone, Sandra (2007)
- Ecological approaches for weed management. Holt, Jodie S. (2006)
- Forbs working group. Pirosko, Carri; Schoenig, Steve (2004)
- Patterns of seedling establishment in artichoke thistle, Cynara cardunculus. Marushia, Robin; Holt, Jodie S. (2003)
- Prediction of Cynara cardunculus seedling development using a degree-day approach. White, Virginia A.; Holt, Jodie S. (2003)
- Effect of competition on artichoke thistle, Cynara cardunculus. White, Virginia A.; Holt, Jodie S. (2002)
- Using Transline* herbicide to control invasive plants. Carrithers, Vanelle F. (1997)
- Controlling Cynara cardunculus (artichoke thistle, cardoon, etc.). Kelly, Mile; Pepper, Alan (1996)
- An artichoke thistle success story. Tidwell, Bill (1994)
Other Cynara cardunculus Information
- CalPhotos - Images of plants taken mostly in California.
- Calflora - See the distribution of this species on Calflora's map of California.
- CalWeedMapper - Distribution information with ability to determine regional priorities.
- Jepson Online Interchange for California Flora - Information on taxonomy, biology, and distribution from UC Berkeley's Jepson Herbarium.
- CDFA - California official noxious weeds.
- USDA PLANTS Database - Federal database with information on identification and distribution, and links to websites in individual states.
- EDDMapS - North American distribution based on Early Detection and Distribution Mapping System.