Helichrysum petiolare (licorice plant)

Helichrysum petiolare

Photo courtesy Joseph DiTomaso

Helichrysum petiolare (licoriceplant) is a shrub (family Asteraceae) found in forested areas and coastal scrub on the central coast, including the southern side of Mt. Tamalpais and the Monterey Peninsula. Licoriceplant is a landscape ornamental that has escaped cultivation, invading undisturbed habitats. It reproduces by seed and vegetatively from stem fragments. The extent of its impacts are unknown, but it can grow to form dense stands that may crowd out native plants. Licoriceplant has been growing outside of cultivation for several decades, but these naturalized populations do not appear to spread very rapidly.

Cal-IPC Inventory rating: Limited

Cal-IPC Resources on Helichrysum petiolare

• California Invasive Plant Inventory 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.
• CalWeedMapper - Statewide maps, climate models, and reports.
• Species account from Invasive Plants of California's Wildlands - Includes biology and management information.
• Cal-IPC News - Articles from our quarterly newsletter. Each issue is available as a pdf. List of articles on Helichrysum petiolare.
• Cal-IPC Symposium Proceedings - Presentations and papers from our annual Symposium. List of articles on Helichrysum petiolare.
• Don't Plant a Pest! - Select your region to find non-invasive alternatives to ornamental species. Also see our statewide brochure on trees.

Cal-IPC News Articles

• Sigg, J. (1997). Everlasting sleeper. CalEPPC News. 5: 8.

Cal-IPC Symposium Proceedings

• Connick, S. and M. Gerel (2004). Partnering to prevent invasions of plants of horticultural origin. California Invasive Plant Council Symposium 2004. Ventura, CA.
• Randall, J. M. (1997). Weed alert! New invasive weeds in California. California Exotic Pest Plant Council Symposium '97. Concord, CA.
• Tu, M. and J. M. Randall (2003). 2003 Cal-IPC red alert! New invasions, recent expansions, and a few others to be on the look-out For. California Invasive Plant Council Symposium 2003. Kings Beach, CA.

Other Resources on Helichrysum petiolare

• USDA PLANTS database - Federal database with information on identification and distribution, and links to websites in individual states.
• Jepson Online Interchange for California Flora - Information on taxonomy, biology, and distribution from the UC Berkeley Jepson Herbarium.
• CalFlora - Distribution information by county based on submitted observations and herbarium specimens.
• The Nature Conservancy Management Summary - Information compiled by TNC land managers. Photos included for some species.
• Natural Resource Projects Inventory - State database with information on resource management projects throughout California. Query by the species of interest.

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