California prohibits bringing firewood into the state if the firewood originated in any area under quarantine for, or an area generally infested with, pests including emerald ash borer, gypsy moth, imported fire ant, chestnut bark disease, pine shoot beetle and others. These prohibitions - when put together - end up banning untreated firewood from nearly every state in the union. Sixteen states in the Central and Eastern US prohibit bringing hardwood firewood originating from California into their state, to prevent the movement of thousand cankers disease. The California Firewood Task Force, US Forest Service Region 5, Yosemite National Park, and Sequoia Kings Canyon National Park all advise using only local firewood within California, and suggest not moving firewood over 50 miles at the very most, to reduce the spead of pests found in limited areas of California such as the goldspotted oak borer and polyphagous shot hole borer. It is illegal to remove many types of hardwood and softwood (coniferous) firewood from any county in California that is quarantined for Sudden Oak Death (Phytophthora ramorum). Some California State Parks prohibit oak firewood entirely. In areas under quarantine for red imported fire ant (this includes multiple counties in Southern California) it is illegal to move firewood that has been stored in direct contact with the ground without prior authorization. This summary is accurate to the best of DMF staff abilities as of 7 January 2015.
California Web Resources:
General Information and Park Specific Pages
Pest Specific Information and Maps
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