More Tree Species References


Online Database References

Tree Identification

  • Plant Database, University of Connecticut College of Agriculture, Health and Natural Resources

  •  Virginia Tech Dendrology Factsheets, Department of Forest Resources and Environmental Conservation

General Information on Individual Species

  • The Gymnosperm Database - edited by Christopher J. Earle

  • SelecTree: Tree Selection Guide, Urban Forests Ecostystem Institute at California Polytechnic Institute


  • Global Invasive Species Database online (posted as of June 26, 2009)

Tallest and Oldest Trees

  • Monumental Trees website: The thickest, tallest and oldest trees worldwide

Print References

General References

  • The Book of Leaves by Allen J Coombes edited by Zsolt Debreczy (The University of Chicago Press, 2003)
  • Manual of Woody Landscape Plants by Michael A. Dirr (Stipes Publishing,1998)
  • New Trees:  Recent Introductions to Cultivation by John Grimshaw and Ross Bayton (Kew Publishing 2009) 
  • North American Landscape Trees by Arthur Lee Jacobson (Ten Speed Press, 1996)
  • Northwest Trees by Stephen F. Arno and Ramona P. Hammerly (The Mountaineers Books – revised edition 2007)
  • Silvics of North America by Russell M. Burns and Barabara Honkala (USDA Forest Service 1990)
  • The Tree Book by Michael A. Dirr & Keith S. Warren (Timber Press, 2019)
  • Trees for All Seasons by Sean Hogan (Timber Press, 2008)
  • Trees of Seattle (second edition) by Arthur Lee Jacobson (2006)
  • Trees of the California Landscape by Charles R. Hatch (University of California Press, 2007)
  • Uncommon Fruits for Every Garden by Lee Reich (Timber Press, 2004)
  • The World Encyclopedia of Trees by Tony Russell, Catherine Cutler, and Martin Walters (Armadillo, 2014)

Genus-Specific References

  • An Illustrated Guide to Maples by Antoine le Hardy de Beaulieu (Timber Press, 2003)
  • Magnolias: A Gardener’s Guide by Jim Gardiner (Timber Press Revised Edition, 1989)
  • Oaks of California by Bruce Pavlik, Pamela Muick, Sharon G. Johnson, Marjorie Popper (Cachuma Press, 2002)


  • A Natural History of Conifers by Aljos Farjon (Timber Press, 2008)
  • Conifers of California by Ronald M. Lanner (Cachuma Press, 1999)
  • Conifers of the World: The Complete Reference by James E. Eckenwalder (Timber Press, 2009)