Common Lilac (French Lilac)
Kingdom: Plantae, Division: Angiosperms, Class: Eudicots, Order: Lamiales, Family: Oleaceae, Genus: Syringa, Species: Syringa vulgaris · Oleaceae (Olive family) · Simple, Deciduous
Species
Syringa vulgaris
Leaf Type
Simple, Deciduous
Family
Oleaceae (Olive family)
Shape
Ovate to Broad-Cordate (heart-shaped base)
Size
Approximately 3-4 inches long and 2-3 inches wide; typical range is 2-5 inches in length.
Margin
Entire (smooth)
Arrangement
Opposite (growing in pairs along the stem)
Rarity
Very Common; ubiquitous in temperate garden landscapes.
Color & Pattern
Deep green on the upper surface, slightly paler green on the underside. No variegation is present; the color is solid and consistent with a healthy summer leaf.
Venation Pattern
Pinnate with a prominent light-colored midrib and curving secondary veins.
Texture & Surface
Smooth (glabrous) and somewhat leathery on the upper surface; matte finish.
Description
This leaf belongs to a large deciduous shrub or small tree known for its intensely fragrant spring blooms. The shrub typically reaches 8-20 feet in height with an irregular, rounded crown. The bark is gray to gray-brown, becoming shredded or platy with age. In spring, it produces large panicles of purple, lavender, or white flowers.
Key Features
The most distinctive features are the smooth, heart-shaped (cordate) base, the strictly opposite leaf arrangement, and the lack of serration on the edges.
Habitat
Thrives in well-drained, neutral to slightly alkaline soils; prefers full sun for best flowering. Often found in old homesteads, gardens, and hedgerows.
Geographic Range
Native to the Balkan Peninsula in Southeastern Europe; widely naturalized throughout North America and much of Europe.
Condition Notes
The leaf appears healthy with a 'Good' grade. There is a small mechanical tear on the right margin and minor yellow spotting (stippling), possibly from very minor insect activity or environmental debris, but no signs of powdery mildew which is common for this species.
Interesting Facts
Lilacs were brought to North America by 18th-century settlers. Thomas Jefferson and George Washington both grew them. They are symbols of first love in the language of flowers.
Medicinal & Uses
Primarily used as an ornamental landscape plant. The flowers are edible (often crystallized or used in syrups). Historically, extracts were used to treat fever, though this is rare today.
Ecological Role
Provides cover for nesting birds and serves as a nectar source for butterflies and moths, including the Clearwing Hummingbird Moth.
Similar Species
Syringa reticulata (Japanese Tree Lilac) which has more elliptical leaves; Catalpa bignonioides (Southern Catalpa) which has much larger leaves and a whorled arrangement.
Foraging Tips
Look for shrubs with thick, suckering stems and opposite budding. In summer, identify by the heart-shaped leaf base; in spring, identification is easiest by the iconic scent of the blossoms.
Toxicity Warning
Non-toxic to humans and common pets (dogs, cats, horses), though the taste is quite bitter.