I am a 73 year old woman. I have been gardening most of my life. In the Winter of my life, I have discovered Permaculture. This Summer I started re-designing my garden to incorporate Permaculture principles and to also make it easier for me to keep on growing things when I get old!

I have made 2 block high double raised 30" beds, with fallen wood in the bottoms. There are cart wide paths on each side with carpet to keep down weeds. The beds are
sorta on contour going up a slope. In the hard to reach areas, I have planted strawberries, asparagus, comfrey and tree collards. Trying to get a lot of perennial vegetables. The beds are mulched with hay and chips. I plan to catch rain in the deep paths where it will soak into the wood in the bottom of the beds to keep the beds moist. I also incorporated a couple beds of beneficial insect plants, that please me with their flowers. The garden is not finished, but may be by Spring depending on my energy and the weather. I am attempting to chronical this construction on a fledging blog. www.steps2permaculture.com. I am not very tech savy. In fact I have tried to change some fonts in this post and have no idea how it will look!
Here are my problems. This is the only sunny spot I have and 6 - 8 inches down is severe hard pan. The raised beds will get my soil deeper. Is there anything that can be added to help soften the hard pan? It is like concrete and deep.
The second phase a bit higher on the slope. I want a mini food forest with fruit trees. I am going to follow the "Grow a Liitle Fruit Tree" book guide lines for pruning to have more choices in a smaller area. I will probably add a few chickens into this area. I do not have room to plant nitrogen fixing trees. Can you give me some ideas? I would like for it to be as self sufficient as possible. I will also fence it to keep out the deer.
Toby - I read "Gaia's Garden" years ago. It is underlined and dogeared and one of my favorite reference books. And I really enjoyed your talk at Permaculture Voices 1, as I remember you got a standing ovation. I am in Georgia, so it is not possible to attend some of your classes. πI will have to be content with books and podcasts. Thank you