Perennial plants are the answer to restoring eco-systems and feeding people! Here is a database that is a useful resource for permaculturalists, homesteaders & edible landscape designers.
You should never forget that every creature has its purpose in the cycle of nature and can also be very important to humans. Sepp Holzer's Permaculture
i use pfaf.org a lot, huge list of perennials and how to eat them. has been super helpful, but always second search the stuff you are interested in because some on their info is a little copy/pasted.
They worship nothing. They say it's because nothing is worth fighting for. Like this tiny ad:
Escape to gardens and natural buildings (for free-ish) in Montana