Seasoned firewood refers to firewood that has gone through a process of drying to reduce its moisture content. When firewood is seasoned properly, it burns more efficiently, producing more heat and less smoke. Proper seasoning is usually achieved by storing firewood in a dry, well-ventilated area over a period of several months.
Generally speaking, well-seasoned firewood will be lighter than wood that hasn't been seasoned. It may also have cracks or splits at the ends and will make a hollow sound when two pieces are struck together. Properly seasoned firewood should have a moisture content of around 20% or less.
When you get your firewood home, it should be stored off the ground and under a cover or shelter in a well-ventilated area to help prevent moisture buildup. If you can stack the wood in a crisscross pattern, it will allow for air circulation that will keep the wood in good condition for burning.