I wonder if the issue of invasive species will be addressed. This has been an inflammatory issue on the net. Permaculturists have been called "unscientific" as well as "socialistic". As an archaeologist--a person who looks at cultures as adaptive systems of the past, I tend to side with Hemenway. Afterall what is a "native plant" anyway, what we really have are environments which include plant systems and human systems (and animal systems as well). And those from 500 A.D. are not the same as those from 2015 A.D. Invasive plants are 'pioneers' -- they have a job to do. Their job is to heal environmental damage, and then get out of the way to allow a new healthy ecosystem to develop. Some permaculture strategies would like to use invasives to help this process along.
One (of many) of many detractors from the permaculture perspective is Linda Chalker-Scott
https://sharepoint.cahnrs.wsu....
I think its an interesting debate.
