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Comparing the Ignitability of Mulch Materials for a Firewise Landscape

By:
DeGomez, Tom
Rogstad, Alix
Hayes, Christopher
Schalau, Jeff
Kelly, Jack J.
A Firewise landscape in Arizona may include native and non-native plants as well as a variety of mulch materials. The goal of Firewise landscaping is to prevent home ignitions by using plants and mulch to reduce the spread of fires near structures or other improvements. We tested the flammability of eight mulches to determine those that are best suited in Arizona landscapes. Straw and pine needles are the most flammable with sod, decomposed granite being the least. The other tested materials offered good resistance against fire and are recommended for most mulching situations.
Revised 10/2014. Originally Published 2007.
PDF icon az1440-2014
Keywords:
  • mulch
  • ignition
  • wildfire
  • defensible
  • landscaping
Publication Date:
October 2014
az1440-2014
Pages:
5 pp.

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