How to Manage Pests

Pests in Gardens and Landscapes

Syringa, Lilac, Japanese tree lilac—Syringa spp.
Family Oleaceae (Olive family)

Plant identification

The best known Syringa spp. is the common lilac, Syringa vulgaris, with its fragrant, old-fashioned flower clusters in shades of lavender, pink, purple, and white. Japanese tree lilac is a larger species that can become a small tree growing to a height of 30 feet.

Optimum conditions for growth

Lilacs grow best where there is a pronounced winter chilling. Some varieties will bloom with only little chilling. In inland valleys, they do best with light shade and protection from reflected heat. In other areas, plant in full sun. All lilacs prefer alkaline soils and good drainage. Provide water during bloom and heavy growth periods.

Lilac
Lilac

Pests and disorders of Syringa spp.

Invertebrates

Diseases

 

Diseases (continued)

Environmental disorders

Weeds

Vertebrates


Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2014 The Regents of the University of California. All rights reserved.

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See our Home page, or in the U.S., contact your local Cooperative Extension office for assistance.

Agriculture and Natural Resources, University of California

Accessibility   /PMG/GARDEN/PLANTS/lilac.html revised: April 25, 2014. Contact webmaster.