Resin extraction

Resin extraction consists of incising the outer layers of a pine tree in order to collect the sap or resin. Resin extraction consists of incising the outer layers of a pine tree in order to collect the sap or resin. Resin circulates throughout a coniferous tree and a few others, and serves to seal damage to the tree. Harvesting pine resin dates back to Gallo-Roman times in Gascony.