I have a raised bed that just seems to grow nothing. Everything is yellow, stunted and pathetic. This year I put identical plants in bed #3 and bed #1. The difference is staggering. They have identical wood boxes, soil, amendments and mulches. I used to think it was because it was much shadier. Now it's in the sun and the same light-wise. So now I think it is the cedar hedge behind me sucking out all the nutrients. Through the process of elimination, that is the only culprit left.
I will be removing bed #3 when I have time.