Senecio madagascariensis (Asteraceae) fireweed

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Fireweed (Senecio madagascariensis) is a daisy-like herb that grows upright and branched, up to 20 inches tall. Its yellow flowers each have 13 petals and look like small daisies about the size of a nickel which mature into white thistle balls.  (source)

Species description or overview

Fireweed (Senecio madagascariensis) overview from the Hawaii Invasive Species Council (HISC).
Description, impacts, images, and distribution in Hawaii of fireweed are from HISC's high-profile invasive pests site.

Senecio madagascariensis information from PIER
Information on Senecio madagascariensis as relevant to Pacific Islands is provided by the Pacific Island Ecosystems at Risk project (PIER).

Taxonomy & nomenclature

ITIS nomenclature info for Senecio madagascariensis
Nomenclatural information about Senecio madagascariensis is provided by ITIS.

Pest alerts

Fireweed "Weed of the Week" pest alert 
Fireweed is the featured "Weed of the Week" on the radio program sponsored by Kauai Community Radio and the Kauai Invasive Species Committee (KISC). This pest alert is available on KISC's "Weed of the Week" site.

Fireweed (Senecio madagascariensis) overview from the Hawaii Invasive Species Council (HISC).
Description, impacts, images, and distribution in Hawaii of fireweed are from HISC's high-profile invasive pests site.

Impacts

Fireweed (Senecio madagascariensis) overview from the Hawaii Invasive Species Council (HISC).
Description, impacts, images, and distribution in Hawaii of fireweed are from HISC's high-profile invasive pests site.

Senecio madagascariensis (Asteraceae): species information from GCW
Information on Senecio madagascariensis as relevant to Pacific Islands is provided by the Global Compendium of Weeds (GCW).

Control methods

Fireweed biocontrol - 2006 report
Two of three promising fireweed biocontrol agents perished in captivity, according to this report from the Hawaii Department of Agriculture.

Senecio madagascariensis as a weed in Hawaii 
Information about Senecio madagascariensis as a weed in Hawaii is presented by the College of Tropical Agriculture and Human Resources (University of Hawai).

Control of Madagascar ragwort (aka Madagascar fireweed, Senecio madagascariensis)    
Cultural and chemical measures to control fireweed are discussed in a pest alert issued by the University of Hawaii and Hawaii Department of Agriculture (2004).

Herbicidal weed control methods for pastures and natural areas of Hawaii 
This comprehensive review of herbicide application methods includes calculations for formulations, and appendices listing herbicides registered for use in Hawaii and their toxicities (University of Hawaii, 2002).

Images

1-page info sheets 
Fireweed (Senecio madagascariensis) pest alert flyer

Images of Senecio madagascariensis (Asteraceae) (fireweed)
Links to high-resolution free images of Senecio madagascariensis (Asteraceae) (fireweed) by Forest & Kim Starr (USGS) are available here.

Smithsonian Flora of the Hawaiian Islands info for Senecio madagascariensis
The Smithsonian Flora of the Hawaiian Islands website presents information about Schiedea helleri in Hawaii.

Senecio madagascariensis images from PIER
Images of Senecio madagascariensis provided by the Pacific Island Ecosystems at Risk project (PIER).

Distribution

Plants of Hawaii: Senecio madagascariensis -- MAPS
USDA/ITIS (http://www.itis.usda.gov/)

Fireweed - 2006 report
Fireweed infestations on the Islands of Kauai and Oahu are contained, according to this 2006 report from the Hawaii Department of Agriculture.

Senecio madagascariensis as a weed in Hawaii 
Information about Senecio madagascariensis as a weed in Hawaii is presented by the College of Tropical Agriculture and Human Resources (University of Hawai).

Fireweed (Senecio madagascariensis) overview from the Hawaii Invasive Species Council (HISC).
Description, impacts, images, and distribution in Hawaii of fireweed are from HISC's high-profile invasive pests site.

New plant records from East Maui for 1998 
Eleven new species are reported for East Maui.

Full-text articles

Maui Offshore Islet Botanical Survey   
Starr, F., K. Starr, and Wood K. 2006. Maui Offshore Islet Botanical Survey. Report prepared for State Department of Land and Natural Resources and the Offshore Islet Restoration Committee, Honolulu, Hawaii. ISBN: (unknown or N/A). ISSN: (unknown or N/A).

Introductions for biological control in Hawaii 1997-2001   
Culliney, Thomas W., Walter T. Nagamine, and Kenneth K. Teramoto. 2003. Introductions for biological control in Hawaii 1997-2001. Proc. Hawaiian Entomol. Soc. (2003) 36:145-153. ISBN: (unknown or N/A). ISSN: (unknown or N/A).

Bibliography

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The content of this page is based on information last generated on 19 June 2009 by PT. The template for this page was created on 15 March 2004 by EMS, and was last updated on 20 February 2006 by PT.