I've brought this up before in the hugelkulturthread but since Toby is here I thought I'd single this question out in its own thread. If I'm being inappropriate I apologize.
Toby: In Gaia's Garden you mention burying cedar logs (or was it rails?) and planting blueberries over them...
Do you know if there are any acid-loving vegetables can be planted in a similar manner? Ones that can grow well despite the inhibitor chemicals released by the cedar? My mother was telling me that cedar leaves are a good mulch for tomatoes so I'm thinking that the rails could also be used.
I have hundreds of extremely old and weathered cedar rails that are too far gone for most other uses. (eg. fencing)
I don't mention cedar; I just talk about logs, brush, and dead wood with no species name (I checked!). I would not normally recommend cedar logs as a good choice for hugelkultur, but if they are already pretty rotten, they may not have much of the fungi-inhibiting compounds left. Now, whether cedar will actually inhibit the growth of plants, as opposed to many soil organisms, I don't know. You could try something small scale first.
I'm intrigued that cedar leaves are a good mulch for tomatoes. I wonder if they inhibit verticilium wilt and other fungal problems that tomatoes are prone to. That's worth checking out!