This covers a wide variety of organisms. Prepared & published by the World Conservation Union. http://issg.org/worst100_species.html Scary reading. I notice my lietmotif - Japanese knotweed (Polygonum cuspidatum/Fallopia japonica etc. etc.) makes the list. gb
I found the link on the site of the Invasive Plant Council of BC which is newly renovated & improved. A good resource for Provincial gardeners, professionals & students alike. gb
There's large choking patches of knotweed in the mountains near here, although it may be the hybrid derivative Bohemian knotweed rather than pure Japanese knotweed - I haven't looked up close.
Ron B...don't look at the naming & idnetification of these, unless you want a headache or an argument! JMHO. The one I have documented in this corner of the Fraser Valley, I believe to clearly be Polygonum cuspidatum. I have seen no variation in physical characteristics apart from size. Since it almost exclusively propagates vegetatively, much of the material may be genetically identical. I am watching a few clumps where it is duking it out with Himalayan Blackberry. Over the next couple of years I will be interested to see which one wins. No odds offered by me. Native plants don't stand a chance in that overwhelming duel.. I also check each stand for disease & predation. If I were as healthy as this stuff, the health care providers would be out of business. It's sole redeeming feature in our area is that the honeybees LOVE it in Aug/Sep. gb
