Is Cedar Mulch Toxic?

Toxicity

• Cedar much is not toxic to plants. Horticulturalist Chris Starbuck of the University of Missouri at Columbia study "Mulch Ado about Nothing," May 4, 2001, finds "no significant negative effects of cedar mulch on the growth or germination of plants."

Uses

• Cedar, like other wood mulches, helps soil around plants to retain moisture and stay aerated. It also encourages earthworms and soil microorganisms that are beneficial to plants. Cedar mulch is recommended for use around trees, shrubs and perennials. It is also among the longest-lasting wood mulches.

Considerations

• Cedar mulch, as with other wood and bark mulches, is not well-suited in vegetable gardens or annual flower beds, as it makes it difficult for new plants to germinate and take root.