The BEST site I have seen on the subject! Permaculture Design: Vegetable & Herb Guilds | Permaculture Magazine
In guter Gesellschaft
Permaculture on 1/4 acre with 5 Zones around house
Weeds That Are Good for Your Garden
Some great permaculture posters linked to in this post - including zebras in zone 5. How cool...
Permaculture Design Principles
Larger Spiral Garden Design Inspired by the Three Druid Elements
Nine Things A Permaculture Gardener Needs To Provide For Chickens - Open Permaculture - Permaculture Design Course
15 Things to Observe Before Starting Your Permaculture Design
A collection of 16 DIY Compost bins, to suit anyone's gardening needs!