Homeowners insurance probably will cover it. You may need to switch to a farm type policy, but you should call your agent to check. Happily, farm policies (like those available at the farm bureau) are relatively inexpensive and they cover things like your barn burning or your tree falling on your fence.
Ill tell you from expierience. Its cheap and well worth it. Call farm bureau or state farm ins and dont wait around. I had 2 get out one night and one of them totaled a cadillac escalade. Luckily nobody got hurt physically. But my wallet paid the price. And ur covered no matter what happens. DO IT. DO IT. DO IT