Reply by Jim Finn

I tried making compost of sawdust and it composted well. Only thing is nothing would grow in it except a few weeds. As this mulch continues to decompose it consumes nitrogen so the seedlings starve for it. I used literally tons of wood chips, from felled trees, as a mulch on a slope and it worked as an effective weed killer… Just my experience… I now put my sawdust in the trash, that goes to landfill.

-- No PHD just a DD214 Lubbock Texas