Plan the perfect garden with our interactive tool →

Lilac Tree Leaf Identification

The Japanese lilac tree (Syringa reticulata) grows taller than the typical common lilac bush, developing to heights of 30 feet. This imported ornamental produces a cream-white flower that does not possess the same aroma of the more familiar lilac types. The leaves of this lilac tree also differ from those of the common lilac, identifiable by certain features.

Opposite Pattern

One characteristic of the leaves of the lilac tree are how they emerge and grow on the twigs. The leaves grow opposite each other, with pairs of leaves growing at each node on the twig. If you find leaves growing just one to a node in an alternate fashion, you will know that the tree is not a lilac species.

Size and Time Frame

The lilac tree has leaves that grow between 2 and 5 inches in length, notes the University of Connecticut Plant Database website. In some cases, the longer foliage reaches a length of up to 6 inches. The leaves develop in the early part of spring on a Japanese lilac. The tree is deciduous, so the leaves will fall from the limbs by winter.

  • The Japanese lilac tree (Syringa reticulata) grows taller than the typical common lilac bush, developing to heights of 30 feet.
  • The lilac tree has leaves that grow between 2 and 5 inches in length, notes the University of Connecticut Plant Database website.

Leaf Shape

The leaves of the Japanese lilac tree are lanceolate to ovate, according to the Missouri Botanical Gardens website. This means that some have the shape of a spear point, while others are more elliptical in their form. The leaves are simple with a single blade. The leaves differ from those of the common lilac shrub, which are heart-shaped. The bases of the leaves on a lilac tree are much rounder.

Color

From their early stages of their development, the leaves of the lilac tree take on a dark shade of green. The tree is not at all noteworthy for any color from its foliage come autumn. The leaves never change colors; they remain the same shade of green before the tree sheds them.

  • The leaves of the Japanese lilac tree are lanceolate to ovate, according to the Missouri Botanical Gardens website.
  • The leaves differ from those of the common lilac shrub, which are heart-shaped.

Effects of Disease or Pests

Powdery mildew poses a problem for all lilac types, and the Japanese lilac tree is no exception. This type of ailment causes the leaves to take on a whitish tint to them, with the disease affecting the look of the leaves the most from midsummer to late summer. The lilac leaf miner also attacks this species, joining leaves together with a web and then eating them, leaving only a “skeleton” of leaf veins in its wake.

Related Articles

Holly Leaf Identification
Holly Leaf Identification
Birch Tree Leaf Identification
Birch Tree Leaf Identification
Characteristics of Maple Trees
Characteristics of Maple Trees
Facts About a Magnolia Leaf
Facts About a Magnolia Leaf
How to Identify Magnolia Trees by Their Leaves
How to Identify Magnolia Trees by Their Leaves
Types Of Lilacs
Types Of Lilacs
Betula Pendula Disease
Betula Pendula Disease
Live Oak Tree Identification
Live Oak Tree Identification
Identification Guide for Flowering Trees
Identification Guide for Flowering Trees
How to Identify Leaves on Apple Trees
How to Identify Leaves on Apple Trees
Tree Leaf Identification Guide
Tree Leaf Identification Guide
How to Identify Tree Thorn
How to Identify Tree Thorn
Hardwood Tree Leaf Identification
Hardwood Tree Leaf Identification
Garden Guides
×