The Japanese lilac is not a flower, but a tree. It is part of the Oleaceae family and grows up to a height of 25 feet. It resembles a bush as much as it does a tree. The blossoms of the Japanese tree lilac are usually white or cream, and it mainly blooms in late spring. It also yields dry, brown fruit that is not edible for humans, but is sometimes eaten by small animals. It is also popular for the nesting of birds. The dark color of the bark, which can be gray, brown, or purple, is a sharp contrast to the light-colored blossoms.