So what are the odds that a large mulch pile will start to burn. I have many large piles and a neighbor said they are a fire hazard. Now I know mulch is hot and can burn, but what are the odds of the this happening? I had planned to use most of it as a windblock and the rest spread on my property. I looked on the fire stations website and found no restrictions for mulch. Has anyone hear had a problem with mulch piles igniting, especially during the hot summer and in dry windy areas?