Sawdust
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. 1994-dr
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