If you mix saw dust, or wood shavings in soils. it can make the soil loamy and loose.
make sure to dry it first.
if you don't have a saw dust or wood shavings you can use brown leaves just cut it in small pieces.
wood dust are free. You can find it on store that are selling wood.
wood shavings are free or sold in affordable price. You can find it on shops that are making furnitures.
