I used red cedar in a recipe that called for Pine fines. The plants are doing much better than they were with the store bought soils. However I am reading some more where people are saying Cedar is a BAD, BAD, BAD idea an that it could inhibit the plants. Please advise. I was using a recipe from this link: http://forums2.gardenweb.com/discussions/1423691/container-soils-water-movement-and-retention-xvi

The plants seem to be doing great, but am I actually harming them?