Only a cheapie like me could think that stuff up.... I wonder how they do it, maybe a certain amount on planting, and then an automatically increasing amount of insurance per year as the trees grow. They likely have a department or two that keeps up with all of it.
I seriously doubt it... i.e. insurance coverage. wildfire (in the overall life of a forest) is not an over-burdensome threat on managed acreage and as such the company would self insure.