By The Old House Web
Sawdust is often used as a mulch material around herbaceous perennials and woody ornamentals.

Problems can occur as sawdust starts decomposing. Soil bacteria may tie- up or "borrow temporarily" some available nitrogen. The constant addition of sawdust may cause plants to appear stunted and yellowish.

As the sawdust finishes decomposing, nitrogen will be returned to the soil.

A handful of a complete fertilizer scattered over the sawdust should limit any temporary nitrogen depletion.


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