The Nature Conservancy's Wildland Invasive Species Program                      http://tncweeds.ucdavis.edu/esadocs.html

Homepage for the UK - based Japanese knotweed alliance http://www.cabi.org/BIOSCIENCE/japanese_knotweed_alliance.htm

http://www.nysaes.cornell.edu/ent/biocontrol/

INTERNATIONAL ORGANIZATION FOR BIOLOGICAL CONTROL OF NOXIOUS ANIMALS AND PLANTS   (IOBC)
NEARCTIC REGIONAL SECTION (NRS)
http://gnv.ifas.ufl.edu/~iobcweed/

USDA's National Biological Control Institute
http://www.aphis.usda.gov/nbci/nbci.html

Biological control virtual information center
http://ipmwww.ncsu.edu/biocontrol/biocontrol.html