Synonyms: Sarathamnus scoparius, Spartium scoparius
Common names: Scotch broom; English broom; common broom
Cytisus scoparius (Scotch broom) is a perennial shrub (family Fabaceae), which grows in sunny sites with dry sandy soil, and spreads rapidly through pastures, borders of forests, and roadsides. Cytisus scoparius can be found from the coast to the Sierra foothills. This weed crowds out native species, has a seedbank that can remain dormant for up to 80 years, diminishes habitat for grazing animals, and increases risk for wildland fires.Cal-IPC Rating: High
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.
Cal-IPC Newsletter Articles
- Weeds and climate resilience in Sierra meadows. Brusati, Elizabeth; Johnson, Doug. Vol 24, Issue 1
- Scotch broom gall mite: a new partner in broom management . Oneto, Scott. Vol 23, Issue 3
- Weed biological control agents approved for California. Pitcairn, Michael J.; Smith, Lincoln; Moran, Patrick. Vol 22, Issue 1
- Wildland weed news. Cal-IPC. Vol 20, Issue 4
- Prioritizing Regional Response to Invasive Plants in the Sierra Nevada. Brusati, Elizabeth; Morawitz, Dana; Powell, Cynthia. Vol 19, Issue 2
- Interview with Cal-IPC co-founder Carla Bossard. Darin, Gina. Vol 18, Issue 4
- Nevada County Scotch Broom Challenge. Lorenson, Lynn. Vol 18, Issue 2
- Recommended action on invasive ornamentals. Cal-IPC. Vol 14, Issue 1
- Don’t sell a pest: A new partnership to prevent plant invasions through horticulture. Connick, Sarah; Gerel, Mike. Vol 13, Issue 2
- Scotch broom lopping trial. Taylor, Mike. Vol 13, Issue 1
- An army of one: One man’s fight against broom in Tilden Park. Richardson, Brianna. Vol 12, Issue 3
- Fighting weeds in the Tahoe basin. Donaldson, Sue. Vol 11, Issue 2
- International broom initiative: A comprehensive broom and gorse biological control effort. CalEPPC. Vol 09, Issue 2
- Richmond weed abatement ordinance. . Vol 07, Issue 1
- Fort Ord readies the troops for war – on weeds!. Fry, Virginia. Vol 06, Issue 1
- Highways as corridors of dispersal. Madison, John. Vol 04, Issue 1
- Marin supervisors establish policy against non-natives. Griffith, Quentin. Vol 03, Issue 2
- Exotic pest plants of greatest ecological concern in California September 1994. Cal-IPC. Vol 02, Issue 4
- California Exotic Pest Plant Council draft list exotic plants of greatest concern October 1993. CalEPPC. Vol 01, Issue 4
Cal-IPC Symposium Presentations
- Haubensak, K. A., I. M. Parker, et al. (2010). Testing efficacy of control methods of the invasive shrub Cytisus scoparius in forest habitat of the Pacific Northwest. Cal-IPC 2010 Symposium. Ventura, CA, California Invasive Plant Council
- Oneto, S., J. M. DiTomaso, et al. (2005). Control of Scotch broom (Cytisus scoparius). California Invasive Plant Council Symposium 2005. Chico, CA.
- Connick, S. and M. Gerel (2004). Partnering to prevent invasions of plants of horticultural origin. California Invasive Plant Council Symposium 2004. Ventura, CA.
- Corbin, J. D. and C. M. D'Antonio (2003). Too much of a good thing: Restoration of native biodiversity following soil nitrogen enrichment. California Invasive Plant Council Symposium 2003. Kings Beach, CA.
- Donaldson, S., W. West, et al. (2003). Getting the job done: Working within the regulatory environment at Lake Tahoe to manage weeds. California Invasive Plant Council Symposium 2003. Kings Beach, CA.
- Pickart, A. (2003). A decade of dune restoration at the Lanphere Dunes. California Invasive Plant Council Symposium 2003. Kings Beach, CA.
- Alexander, J. M. F. and C. M. D'Antonio (2000). Factors affecting successful control of French and Scotch broom and restoration of native communities in coastal California grasslands. California Exotic Pest Plant Council Symposium 2000. Concord, CA.
- Cooper, V. K. and B. J. Moritsch (1999). Weeding the wilderness: Non-native plant management at Point Reyes National Seashore. California Exotic Pest Plant Council Symposium '99. Sacramento, CA.
- Archbald, G. (1998). Mechanical control methods: beyond weed bashing. California Exotic Pest Plant Council Symposium '98. Ontario, CA.
- Roja, D. and J. Popenoe (1998). Fire effects on first-year Scotch broom in Redwood National and state parks. California Exotic Pest Plant Council Symposium '98. Ontario, CA.
- DiTomaso, J. M. (1995). Overview of extension non-crop weed research in California. California Exotic Pest Plant Council Symposium '95. J. Lovich, J. Randall and M. Kelly. Pacific Grove, CA.
Other Cytisus scoparius Information
- CalPhotos - Images of plants taken mostly in California.
- CalFlora - Distribution information based on submitted observations and herbarium specimens.
- 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.
- Bugwood - National database from the Center for Invasive Species and Ecosystem Health at the University of Georgia.