Replacing Mulch with Mulch

March 17th, 2017

A picture of a hand holding partially composted mulch.
Partially composted mulch

Since starting as the Outreach Coordinator with the Living With Fire Program, I have learned that landscape mulch located next to the house is undesirable.  This is because, from a defensible space stand point, embers from a  wildfire can ignite the mulch, and produce flames next to the house, possibly igniting it as well. Since then, my husband and I searched for a better alternative to replace all the wood mulch we currently have. We’ve come to the conclusion that our best option is…mulch.

You may think that I’m off my rocker. I’ve advocated against mulch in former blog posts. Now I’m replacing my mulch with mulch? Well hear me out. My husband loves the look of mulch, and considering that decomposed granite or DG was a little more expensive, we compromised on partially composted mulch.

Our decision to change out our mulch was reached after we reviewed the publication, “The Combustibility of Landscape Mulches”. . This study was performed through a collaborative effort among the Carson City Fire Department, Nevada Tahoe Conservation District, University of California Cooperative Extension and University of Nevada Cooperative Extension. Eight mulch treatments were weathered outdoors for 79 days, then ignited by a drip torch on a hot, dry afternoon in August. The mulch treatments were evaluated by flame height, rate of fire spread and temperature. Of the eight mulch treatments, the partially composted wood chips which are sold locally, primarily burned via smoldering combustion, were found to have the shortest flame height, the slowest rate of fire spread and burned at a low temperature. To see footage of these different treatments during the study, watch here:

My property is slowly evolving to make way for better defensible space and I’m beginning to feel much safer with our choices. Stay tuned for more of my experiences as a new homeowner.

Headshot of Jamie
Jamie Roice-Gomes

Jamie Roice-Gomes is the outreach coordinator with University of Nevada Cooperative Extension’s Living with Fire Program.  She earned her Bachelor of Science in Wildlife Ecology and Conservation and a Master of Arts in Interactive Environmental Journalism. She was a public relations assistant for Conrad Communications, a public information officer intern at the Nevada Department of Conservation & Natural Resources, and a Biological Science Technician at the USDA-Agriculture Research Service. She also enjoys volleyball, the Great Basin Desert, and spending time with family. Contact Jamie at 775-336-0261 or

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