By John DeFore
It may rank among the “Least Wanted” plants in North America (the state of Washington describes it as noxious for its ability to crowd out all other vegetation), but the Japanese knotweed may be good for something after all.
Dr. Pam Marrone, founder of Marrone Organic Innovations announced at a recent meeting of the American Chemical Society the development of a new biopesticide made from knotweed extract, one that will be appropriate for use by organic farmers who shun conventional pesticides.
