I have done this tour twice now with Greg (the owner of the Urban Farm), and he is very knowledgeable. His entire yard is edible except the shamel ash tree in his back yard which is way cool. He reuses anything even makes his hardscape part of his landscaping with reused pieces of broken concrete that he took off another job site. He has chickens that clean his garden at the end of the season and fertilize it at the same time. He teaches you how to grow a tree the size of a bush so that you can reach all your fruit instead of feeding the birds. He also sells organic hand wash, dish soap and laundry detergent that you can drain into your garden so that you are using your own grey water instead of pouring it down the drain. I highly recommend do the tour since it is only a $10 donation.