I knew this all along
Myth #3: Burning certain soft woods (such as pine) will cause creosote damage to your chimney.
While this myth has been around for ages, studies conducted by the University of Georgia found that the amount of damage wood left on the chimney was a result of low-temperature fires rather than a resin rich fuel source. While pine does contain more sap than other types of wood, this is no longer considered to be cause of creosote buildup in chimneys. Wood that does cause problems though is burning green wood or burning fires at low-temperatures. Regardless of your choice of wood, it is very important to only use dry and seasoned wood to burn in your fireplace. Always remember that properly seasoned wood takes about one year for wood to properly dry out. Dry wood is more of a concern than hard versus soft wood when choosing what to burn.