Giant Hogweed is indeed notorious, regularly putting people in hospital.
It is one of the "causes celebres" of Alien invaders
eg http://www.hort.uconn.edu/cipwg/
PvR

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Meindert de Jong schreef
How about biocontrol of alien invaders such as Giant Hogweed, ragwort?
Visit http://www.geocities.com/meindertdejong/ Cheers, Meindert

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"P van Rijckevorsel" writes:
Talking about invasive species, this came up on another list

http://leg1.state.va.us/cgi-bin/legp...031+sum+SB1109

AIUI it was already a problem in the NorthWest (including California),
but apparently is spreading
PvR