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Why Gravel Is Replacing Mulch for Safer Gardening in Fire-Risk Areas

As unrelenting heat and drought create inhospitable conditions, so-called "gravel gardens" are gaining popularity among homeowners seeking to mitigate damage from wildfires and extreme weather.
Residents in fire-prone areas have long embraced covering bare soil with inorganic, aggregate materials like gravel. Unlike organic options such as pine bark or wood chips, which ignite quickly, these materials do not fuel combustion.
Using gravel in beds and borders helps prevent weeds from taking root while improving drainage and reducing runoff. Some municipalities now restrict organic mulch use within 2 specified distances of homes and buildings to enhance fire safety.
Illustrating this approach, a gravel garden planted at the Delos Garden at Sissinghurst Castle in Cranbrook, Kent, England, was photographed on July 6, 2025. The installation demonstrates how inorganic materials replace traditional mulches in high-risk landscapes.
Gardeners are increasingly adopting these strategies to address fire-safety concerns by choosing aggregate materials. This shift away from traditional organic mulch in vulnerable regions marks a broader adaptation to harsh environmental conditions.

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Why gravel is replacing mulch for safer gardening in fire-risk areas

Unrelenting heat, wind and lack of rain can create inhospitable conditions for plants, as well as humans. But a simple change in mulch can help gardeners mitigate damage from those conditions, and wildfires too.

3 hours ago·Portland, United States

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