For More Information About Trees

* Fairfax County offers answers to common questions at; click on "FAQs -- Tree Care and Tree Issues." For an overview of the county's urban forestry program, visit

* The Virginia Department of Forestry discusses tree identification and offers a tree planting guide at

* The state's big-tree database is at Jeffrey L. Kirwan, an extension specialist at Virginia Tech, is working on a book about trees in the state that are remarkable -- and not necessarily for their size. To nominate a tree of particular aesthetic or historical significance, send an e-mail to Kirwan at

* American Forests says it is the nation's oldest nonprofit citizens' conservation organization. The group maintains a national register of big trees at

* Fairfax ReLeaf Inc. is a nonprofit group whose volunteers plant and preserve trees and restore habitat on public land in Northern Virginia. The group's Web site is at

* To find a certified arborist, visit

Ben Wharton, a county urban forester, visits Huntley Meadows Park, above, and Scotts Run Nature Preserve, below, to check on trees.