Forest Facts

• Weyerhaeuser's orchards in Washington and Oregon produce seeds for 30 million Douglas fir trees annually. We also grow noble fir, western red cedar, grand fir, hemlock and red alder trees.
• About 80% of all harvesting today in the Northwest is done on private land.
• One fourth of Washington's forests are preserved in Wildernesses and National Parks and never will be harvested.
• Another quarter of our forests are managed for multiple use by the U.S. Forest Service and currently have very little harvest.
• On average, North Americans use wood and paper products equivalent to one 100-foot tall tree each year.
• In 60 years of growing, an average tree accumulates 5,250 pounds of organic material through the miraculous use of sun, soil, water and air.
• A tree exhales 6,000 pounds of oxygen in its life, or about 120 pounds per year, assuming a 50-year life.
• Each person needs one pound of oxygen to breathe per day, 365 pounds per year.
• Each person uses the amount of oxygen given off by three trees.
• One second-growth Douglas fir takes up about 60 pounds of carbon dioxide per year.
• Burning one gallon of gasoline produces 19 pounds of carbon dioxide.