permaculture

[Scott Pittman <pci@permaculture-inst.org>]

Just a small question - need "veritable" answer.
I am getting ready to plant comfrey in my garden to weed barrier. A friend, 
who lived in New Mexico for 12 years, says that comfrey spreads in her 
garden and takes over. Cannot disregard many years of experience, although 
seems like everyone else has no problems, and just success with comfrey. 
Can anyone advise?

Another question - when and  where was held first pc course in South 
America? In North America?

thanks all

Arina M.Pittman