Common Lilac
Kingdom: Plantae, Division: Angiosperms, Class: Eudicots, Order: Lamiales, Family: Oleaceae, Genus: Syringa, Species: S. vulgaris · Oleaceae (Olive family) · Simple; Deciduous
Species
Syringa vulgaris (Confidence: 95%)
Leaf Type
Simple; Deciduous
Family
Oleaceae (Olive family)
Shape
Cordate to Ovate (Heart-shaped at base with a pointed apex)
Size
Approximately 2 to 5 inches long and 1.5 to 3 inches wide. This specimen appears average sized for a mature plant.
Margin
Entire (Smooth, without teeth or lobes)
Arrangement
Opposite (growing in pairs on the stem)
Rarity
Very Common (Ubiquitous in temperate landscape designs and suburban environments)
Color & Pattern
Deep green on the upper surface (adaxial), slightly paler green beneath. Lacks variegation; shows a uniform, healthy green color typical of the growing season.
Venation Pattern
Pinnate with subtle reticulation; veins are slightly lighter than the blade surface.
Texture & Surface
Smooth (glabrous) and slightly leathery; matte to semi-glossy finish.
Description
The Common Lilac is a large deciduous shrub or small multi-stemmed tree reaching heights of 20 feet. It is world-renowned for its highly fragrant, upright panicles of purple, lavender, or white flowers that bloom in late spring. Bark is gray to brown, becoming shredded and flaky with age.
Key Features
Heart-shaped base, smooth entire margins, opposite leaf arrangement, and significantly long petioles (leaf stalks).
Habitat
Thrives in well-drained, neutral to slightly alkaline soil with full sun exposure. Commonly found in temperate gardens, hedgerows, and abandoned homesteads.
Geographic Range
Native to the Balkan Peninsula in Southeastern Europe; widely naturalized throughout North America, Europe, and Asia.
Condition Notes
The specimen appears to be in Good to Excellent health with no visible signs of powdery mildew, which is a common fungal ailment for this species later in the season.
Interesting Facts
The wood of the lilac is among the densest in Europe and has traditionally been used for musical instruments and knife handles. Lilacs were a favorite of George Washington and Thomas Jefferson.
Medicinal & Uses
Primarily used as an ornamental landscape plant. Historically, lilac extracts were used as an antiperiodic to treat fever/malaria, though this is not common today. Flowers are sometimes used in culinary jellies or syrups.
Ecological Role
Provides nectar for various butterflies and moths, particularly the Tiger Swallowtail. Its dense shrubby growth provides nesting cover for songbirds.
Similar Species
Syringa × hyacinthiflora (Early flowering lilac) which has more reddish-purple autumn foliage, or Catalpa bignonioides (Southern Catalpa) which has much larger leaves and whorled arrangement.
Foraging Tips
Look for the distinct heart-shaped leaves on woody shrubs in late spring to locate the fragrant blooms. The petiole of a lilac leaf is notably long and often light-colored.
Toxicity Warning
Non-toxic to humans and common pets (dogs/cats). Generally considered safe, though the leaves have a bitter taste to deter herbivores.