• USDA plant database
  The PLANTS Database provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories.
  
• iTree
  How much is your tree worth? The state-of-the art software suite helps you find out. Bringing urban forestry inventory and assessment into schools is a project under i-Tree in the Classroom.
  
• Put your trees to work
  The right tree planted in the right place for the right reason means a working tree with benefits. Learn why.
  
• How to measure a big tree
  This PDF shows you the formula of how to measure a tree.
  
• How to prune trees
  The objective of pruning is to produce strong, healthy, attractive plants. By understanding how, when and why to prune, and by following a few simple principles, this objective can be achieved.
  
• Tree transplanting tips
  These tips will help you choose the right tree.
  
• Forest pests
  Friend or foe? Find out what is lurking in your tree.
  
• Natural resource benefits of tree planting
  Why are trees so important? Read this brochure for some quick answers.
  
• The U.S. National Arboretum Grove of Great American Trees
  All 50 states have chosen a state tree, which is often linked to the state by important historical events, struggles in America’s War of Independence, early uses by settlers, or importance in the timber industry. Find out why your state adopted its tree.
  
• Learn about Christmas trees and greenery
  Evergreens do not shine with brilliant colors – unless someone turns them into a holiday tree.