There seems to be a lot of disagreement about whether cedar needles are a good mulch. Lots of people, including some on these forums, recommend it, but others, including this BC composting fact sheet say "Cedar leaves are known to prevent the germination and growth of plants around them. And although much of this inability of plants to grow under cedar comes from the lack of light available under these massive trees, cedar leaves should not be used as mulch." I've also read in a Pacific Northwest gardening guru book that using cedar needles as a mulch prevents water from getting through. I have blueberry bushes that need more acid, and lots of cedar needles, so I'd love to use them as a mulch if they aren't bad for my plants! Anyone have definitive information on this that can help bust me out of my indecisive bottleneck? Thanks kindly, D.