Lilac Plants in the Yahoo! Directory

Lilac Festival
Takes place annually in Rochester, New York.
www.lilacfestival.com
International Lilac Society
Aims to promote and stimulate interest in the genus Syringa.
lilacs.freeservers.com
Arnold Arboretum: An Introduction to Lilac
Its history and cultivation in New England.
www.arboretum.harvard.edu/plants/lilac_intro.html
Homage to Lilacs
Includes pictures, links, and more.
members.tripod.com/lilacmaven/index_m.htm