Spring has sprung. And that mean Northen Virginia residents are busy adding fresh mulch to their garden beds. And while mulch can spruce up your landscaping, a local fire and rescue group says mulch fires pose a real risk. The Ashburn Volunteer Fire Rescue Department recently warned local residents of the fire hazards associated with the ground covering.
Mulch Fire Hazards
On March 27, the fire department posted a video on social media of a mulch bed burning near a home. “Despite today’s cool temperatures, units have already responded to multiple mulch fires in the county,” the post said. “With local schools and community groups delivering mulch to you, and spring gardening season getting into full swing, knowing how to prevent mulch fires is key to protecting your property.”
The department explained that organic mulch can decompose and generate heat. If that heat cannot dissipate, the mulch could ignite. “Mulch fires can also be started by discarded cigarettes, matches, or embers from grills or fire pits,” the post said.
If a fire were to start in a mulched area close to a home, it could ignite siding or other materials, allowing the fire to spread.
Professional Safety Advice
Ashburn’s fire department offers this advice to protect your home or business against a mulch fire:
- Maintain Adequate Distance: Keep mulch away from buildings, decks, grills, and other structures. A minimum distance of 18 inches is recommended.
- Use Non-Combustible Mulch Near Structures: Consider using rocks, gravel, or sand within a 5-foot zone around structures.
- Avoid Thick Layers: Apply mulch in a thin layer (2 to 4 inches) to prevent heat buildup. Mulch piled too deeply (more than 6 inches) can trap heat, increasing the risk of spontaneous combustion.
- Fine or Shredded Mulch: Finely textured mulch can pack together, reducing airflow and potentially raising the heating potential.
- Keep Mulch Moist: Regularly water mulch, especially during dry periods. Dry mulch is more flammable and prone to ignition.
- Remove Debris: Regularly remove dead plants, leaves, and other debris from mulch beds.
- Be Careful with Fire: Never discard cigarettes or other burning materials in mulch.
Feature image courtesy Ashburn Volunteer Fire Rescue Department/Facebook
