Purdue Arboretum: Tree Trivia

• There are currently over 8000 trees growing on the Purdue campus including 311 different varieties.
• Crabapple is the most common species of tree on campus, making up about 11 percent of our tree population.
• The national co-champion Smoke tree graces our campus, as do the state champion Cockspur Hawthorn and Jack Pine.
• A study of benefits and costs of tree planting in Chicago
  found the projected value of trees (e.g. pollution reduction,
  energy savings, property value) is nearly three times greater
  than the projected costs.
• A large tree cleans about 330 pounds of CO2 from the atmosphere each year.
• Trees are the longest living organisms on earth, with some surviving for over four thousand years.
• A study has shown that trees reduce crime. Apartment buildings with high levels of greenery had 52% fewer crimes than those without any trees.
• Over the past 25 years there have been only two years when Purdue has not planted more trees than it has removed - many times hundreds more!