The raw materials of woodchips can be pulpwood and residual wood from agriculture, landscaping, logging, and sawmills. Woodchips can also be produced from remaining forestry materials including  branches, unsaleable materials or undersized trees. Forestry operations provide the raw materials needed for woodchip production. Almost any tree can be converted into woodchips, however, the type and quality of the wood used to produce woodchips depends largely on the market.