Answer: There are probably as many opinions about mulch as there are gardeners, but in general any type of organic mulch is fine. It will feed the soil as it breaks down and will help hold soil moisture and keep weeds in check. You could use anything from chopped leaves to newspaper to shredded bark mulch to straw and it should be fine. Pine needles are occasionally mentioned as an acidic mulch and fresh sawdust tends to temporarily tie up nitrogen, but a thin layer of either of these would not cause a serious problem assuming your soil is in decent shape to begin with. If you are in doubt as to the pH and other qualities of your soil you could run some basic soil tests. Your County Extension (788-1338) should be able to help you with the tests and interpreting the results.
Q&A Library Searching Tips