what is best soil mix for a raised herb garden bed?

Image by redteam
The state of my garden almost two months after planting. The radishes were planted on 10/22/2007 and everyone else went in on 10/23/2007. Look at those radishes go!

I believe that this was taken around the time when these evil little green caterpillars started eating the radish leaves. The aphid hordes had still not arrived.

Question by : what is best soil mix for a raised herb garden bed?
I am making a raised bed to plant herbs in. What is the best soil for it? I plan to put landscape fabric down and then the soil and then plants. Location gets full Texas sun.
Oops! I forgot to ask what is the best mulch to put over the plants after I plant them? Can you use cedar mulch or will it not be safe for edibles?
Oops! I forgot to ask what is the best mulch to put over the plants after I plant them? Can you use cedar mulch or will it not be safe for edibles?

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