Ishikawa Prefecture is known for its production of quality charcoal. The forests in the area have been maintained well by mowing the grass, cutting down ko-nara (Quercus serrata) and sawtooth oak trees, and using them for charcoal-making. The number of people who make charcoal decreased dramatically after the war, due to the increase in demand for petroleum and gas; however, charcoal production has continued in the Ôno charcoal factory in Suzu City, using wood from nearby forests. In 2003, the factory started planting sawtooth oak trees in abandoned fields to grow them for 10 years, and then use them for making charcoal for the tea ceremony. Since 2008, volunteers have planted over 4,000 sawtooth oak trees as part of a tree-planting project. In Tôme, Noto Town, experts are planting trees in abandoned fields, and making charcoal for the tea ceremony, as well as other types of charcoal.