Q: I’m looking for something non-toxic to finish my raised cedar vegetable garden.
A: You don’t need a non-toxic finish; merely one that won’t have any adverse affects on your plants, and that’s not the same thing. In truth, most any exterior deck finish will work just fine, and for that matter, so will leaving the cedar unfinished. While unfinished cedar will turn gray, it is not particularly harmed by that process. Incidentally, I’m going to assume that there will be some sort of liner between the cedar and the soil inside. If not, the soil in constant contact with the cedar will eventually rot it from the inside out, in which case what finish you did or did not use will be the least of your problems.
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