Wikipedia summarizes a few points this way: “With its thick bark, nonflammable foliage and protective cones, the species is very fire resistant. In the late 20th century, after wildfires had been suppressed for almost a century, larches at Seeley Lake and Glacier National Park were endangered by major fires enabled by fuel ladder; normally smaller fires would have depleted the fuel. In more recent years, many smaller fires have been allowed to take their course.”