I'm quite green (no pun intended) but enthusiastic about gardening. After following instructions for "lasagna gardening" to create new beds along the perimeter of my lawn last fall, and planting shrubs and perennials, I lay down a mulch of cedar bark. I assumed this was okay as the local garden shops all sell bags of it and it seems to be commonly done. However, I've recently come across several warnings by gardening gurus (Brian Minter Steve Whysall) to never use the stuff. Why not? Is there anything I can do to make it okay? And if not, is there any use at all for the cedar mulch? Thanks!