Is sawdust a good soil amendment or mulch?
No! Sawdust should not be used as a soil amendment or mulch. As a fresh soil amendment, it is very slow to decompose, is void of nutrient content, is a poor aerator due to its small particle size, does not significantly aid in moisture retention and can cause severe nitrogen tie-up in the soil. Some Metroplex compost yards use saw dust as a major ingredient of their materials, however, to avoid numerous problems (short and long-term), it is strongly recommend that you avoid materials containing sawdust. See our Common Problems page to view other common problems associated with non-SBS soils.
