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    The Hawkweed Consortium will be meeting at the 2010 Invasive Species in Natural Areas Conference in Idaho.  More details coming soon!

    NEW! Montana Hawkweed Identification Bulletin now available.  To order more copies, contact Montana State University Extension Publications by clicking here.

     

  • resources

    Check out our resources page with many guides, fact sheets, and regional maps to help you identify the hawkweed complex. 

       

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    Established in 1948 as the Europe Station of the Commonwealth Institute of Biocontrol, CABI Europe-Switzerland has traditionally worked on the classical biological control of invasive insect pests and weeds of Eurasian origin, on behalf of the temperate areas of the world, particularly North America, Australia, and New Zealand.

     

  • Check out our Hawkweed Gallery

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    hawkweed biocontrol consortium

    publications

    A new invasive hawkweed, Hieracium glomeratum
             (Lactuceae, Asteraceae) in the Pacific Northwest.
         Wilson, Fehrer, Brautigam and Grosskopf, 2006. pdf

    A new invasive hawkweed, Hieracium glomeratum
             (Lactuceae, Asteraceae) in the Pacific Northwest.
         Wilson, Fehrer, Brautigam and Grosskopf, 2006. pdf

    Biology and life history of Cheilosia urbana (Meigen)
         and Cheilosia psilophthalma (Becker), two
         sympatric hoverflies approved for the biological
         control of hawkweeds (Hieracium spp.) in New
         Zealand.  Biol. Control 35, 142-154. Grosskopf,
         2005.

    Host range of Cheilosia urbana (Meigen and Cheilosia
         psilophthalma     (Becker) (Diptera: Syrphidae),
         candidates for the biological control of invasive
         alien hawkweeds (Hieracium spp., Asterace) in 
         New Zealand.  Biol. Control 24, 7-19.  Grosskopf,
         Smith, and Syrett, 2002.

    Host range investigations of potential biological
         control agents of alien invasive hawkweeds
         (Hieracium spp.) in the USA and Canada: an
         overview.  Grosskopf, Wilson and Littlefield,
         2008. pdf

    Invasive Hawkweeds (Hieracium spp.) in North Eastern
         British Columbia.  Giroday and Baker, 2006. pdf

    Key to Identification of Invasive and Native
         Hawkweeds (Hieracium spp.) in the Pacific
         Northwest.  Wilson, 2007. pdf

    Phylogenetic Relationships Among Native and
         Naturalized Hieracium (Asteraceae) in Canada and
         the United States based on Plastid DNA
         sequences.  Gaskin and Wilson, 2007. pdf

    Sex and Diversity in the Invasive Plant Hieracium
         Aurantiacum.  Eli Loomis,      2003. pdf