The following are some advantages and disadvantages for using sawdust as mulch. Based on your own knowldege and experience, feel free to add to this list.
- easily available in many areas (pro)
- should use sawdust that is at least one year old if possible (pro)
- fresh sawdust can deplete nitrogen if mixed with the soil (con)
- sawdust on top of the soil should not present a nitrogen concern (to do)
- keep an eye on the plants so as to add a nitrogen-rich fertilizer if necessary (to do)