Cedar Mulch in a Vegetable Garden


Cedar mulch is functional mulch in any garden, and there are many reasons for using cedar mulch in a vegetable garden. The benefits of cedar mulch will aid in plant health and development and soil health, according to Paula Deimling of Kentucky Living Magazine. Cedar mulch is typically available in shredded form and is usually derived from Western or Eastern Red Cedar trees.

Slow Decomposition

  • Cedar mulch "does not decompose as fast as hardwood mulches and will last two to three years," reports Deimling. This slow decomposition allows for reduced mulch usage. This causes environmentally friendly reduced wood harvests. The slow decomposition also increases the time benefits of cedar mulch are experienced in a garden.

Insect Resistant

  • Cedar wood is resistant to many insects. This is the reason many closets and dressers are lined with aromatic cedar woods. Cedar mulch prevents many insects from invading gardens and homes lined with mulched garden and flower beds. According to Heike E. Messner and Jules Silverman of North Carolina State University, two species of the common ant--the Argentine ant and the odorous house ant--avoid using cedar mulch as a nesting substrate, and that cedar mulch, "may serve as an effective component of a comprehensive urban ant management program."

Retains Moisture and Protects Soil

  • Mulch retains moisture in the ground year-round, states Deimling. This retained moisture will protect roots and soil temperatures through maintaining a more level year-round soil temperature that avoids the spikes of summer and winter temperatures. As mulches slowly decompose they return nutrients to the soil. This further protects soil with maintained nutrient levels necessary for good soil health.

Prevents Weeds

  • A 2- to 3-inch layer of mulch will suppress weeds, says Adrian Higgins of the Washington Post. Mixing a small amount of mulch with topsoil before applying mulch as surface protection will increase weed suppression and promote nutrient delivery directly to soil aggregates. Weeds may appear in mulch but likely will lack strong root systems. Most weeds are easily removed from mulched gardens immediately following watering.

Multiple Sources

  • Cedar mulch is obtained from Western and Eastern red cedar forests. Western forests are typically located in Idaho and Montana. Eastern forests grow in Missouri and Arkansas. Multiple locations of cedar forests, unlike Louisiana cypress forests, avoid shortages and adverse environmental impacts. According to Higgins, Louisiana activists have begun protesting the involvement of the mulch industry in clear-cutting coastal Louisiana bald cypress. Cedar mulch is more widely available than Louisiana bald cypress, and demand for cedar mulch is not threatening a loss of ecosystem like the harvest of the bald cypress in Louisiana.

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  • Photo Credit pine bark mulch image by robert mobley from Fotolia.com
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