Appropriate bark for high fire danger area

Question

My home is in an area of Marin that faces high fire danger. I am stumped as to what mulch I can safely use. In the past I've used redwood bark but have been informed that is not a good choice for fire-resistant ground cover. I am thinking of river rock or similar, but would rather avoid rock ground cover if I can.

Patricia

San Rafael

Answer

It is the shredded bark mulches that are causing concern. The recycled rubber mulches are even worse. The least combustible natural mulches are first cocoa hulls followed by medium bark nuggets, then fine bark nuggets. It is always a good idea to check with your local fire department to ensure that you are in compliance with any new local laws.

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