In the Gardens: A Japanese Lilac

The Japanese lilac tree is a fragrant flowering tree native to northern China that is perfect for the garden or street. The Japanese lilac tree was discovered in the mountains of Japan. This species was first described in 1875 by the Russian botanist Maximowicz, who named it Syringa amurense var. japonica. It was introduced in the United States in 1876 at the Arnold Arboretum, in Boston.

A Japanese tree lilac (Syringa reticulata) is at its best for two weeks in early summer when the flowers bloom. Japanese lilacs are trees or very large shrubs that grow to a height of up to 30 feet (9 m.) with a spread of 15 to 20 feet (4.5-6 m.). The genus name Syringa means pipe, and refers to the plant’s hollow stems. The species name reticulata refers to the network of veins in the leaves. The plant has a naturally attractive shape and interesting, reddish bark with white markings that give it year-round interest.

With full sun and moderate water, the clusters of white, fragrant flowers are about a foot (31 cm.) long and 10 inches (25 cm.) wide. The blooms will appear in early summer and emit a pleasant scent. Though the Japanese tree lilac is relatively hardy overall, the flowers are susceptible to late frosts.

This Japanese lilac was planted in Sir Sandford Fleming’s plot (Section 49) and remains a beautiful feature.